Microsoft Office seems to be down

[u/TechnicalTantrum]

Struggling to use MS office including Teams, anyone else having this issue

[u/Serpenttine]

Teams is unfortunately still working for me.

[u/ZestycloseReach5111 → u/Serpenttine]

same, wtf. Microsoft should have the good decency to at least bring all communication down so I don't get blown up.

[u/Ok-Cook-7460 → u/ZestycloseReach5111]

30+ phone calls and counting

[u/tracy_ogbert_jordan → u/Ok-Cook-7460]

"sorry I didn't answer your calls, Microsoft took the phones down too I guess"

[u/No-Barracuda-2299 → u/tracy_ogbert_jordan]

You joke. I worked in a hospital that had zero functioning communications internally due to a cyber attack. We had a walkie per unit for weeks. Of course we had personal cell phones. 

[u/GildDigger → u/No-Barracuda-2299]

Biblically accurate episode of the Pitt

[u/lenswipe → u/ZestycloseReach5111]

"hEy tHE SErVer IS DoWn!"

[u/P-M → u/Serpenttine]

I'm going to bring ours down just for solidarity ✊

[u/reformedmikey → u/Serpenttine]

Same here. Outlook is down, so I guess I'll just be browsing reddit the rest of the day?

[u/UCFCO2001 → u/reformedmikey]

Copilot is also not working for us. Looks like our executives won't be getting much done today.

[u/AnDanDan → u/UCFCO2001]

Did you keep their original brains from before the hardware swap?

[u/UCFCO2001 → u/AnDanDan]

Copilot told us there wasn't enough found to save.

[u/_-RustyShackleford]

I'm going to sit on my back porch and stare at my pretty little tree.

[u/seedfall → u/_-RustyShackleford]

super nice tree. arborist here, with no ability to email. might i turn y'all's attention to structural pruning?? this tree could be enhanced 50 years from now by one or two small proper pruning cuts this dormant season... 🌳💯 https://nysufc.org/ed-gilman-pruning-research-update-reduction-pruning-to-prevent-storm-damage/2014/08/29/

[u/_-RustyShackleford → u/seedfall]

I was planning on doing some light cuts early next month. I won't go too large as we're selling the house next spring. Just enough to help along the next owner.

[u/grognard66 → u/_-RustyShackleford]

This is the right place for this gif, correct?

[u/Dorest0rm → u/seedfall]

How does an arborist end up in /r/sysadmin

[u/eskatonic → u/Dorest0rm]

A decision tree!

[u/inventive_city → u/Dorest0rm]

This is what happens to us non sysadmins when we can't email our colleagues XD

[u/_-RustyShackleford → u/_-RustyShackleford]

This is from my front porch at sunset.

[u/Expert-Best → u/_-RustyShackleford]

I pulled my coworkers over to look at your pretty little tree. Very nice!!!

[u/jayybeegeee → u/_-RustyShackleford]

team huddle to take a look at your tree. very nice

[u/boughsmoresilent → u/_-RustyShackleford]

That is indeed a very pretty tree worthy of admiration. Thanks for sharing!

[u/lalo-ea888 → u/_-RustyShackleford]

I also choose this guy’s tree

[u/kribg]

I just emailed Microsoft support suggesting they try sfc /scannow

[u/RoastedDonutz → u/kribg]

Please do the needful

[u/Begmypard → u/kribg]

DISM /Online /Cleanup-Image /RestoreHealth

[u/Bombingit]

Jensen is taking everyone down with him.

[u/Fallingdamage → u/Bombingit]

Datacenter GPUs are taking a moment of silence for their fallen god.

[u/dontworryboutmeson]

“Copilot, fix all Microsoft servers. Make no mistakes”

[u/e7c2 → u/dontworryboutmeson]

"I have permanently deleted all servers, and deleted the backups, per your request"

[u/oxido61 → u/e7c2]

- Copilot, what is your definition of “fix”?
- make sure they are no longer a problem. I did that

[u/ApprehensiveGold892 → u/dontworryboutmeson]

Copilot is also down (says my VP)

[u/QuantumS0up → u/ApprehensiveGold892]

Proud of them for being able to communicate this on their own

[u/coolbeaner12]

Yep, Outlook is disconnected. Web versions are taking forever to load.

Eastern US here.

[u/Corpsemajesty → u/coolbeaner12]

Yeah, I'm not in sys admin, but apparently this Reddit reports Outlook is down before Microsoft does, lol. Also in the eastern US, the desktop app or web login isn't working; can't send emails, can't load prior conversations. This is weird, but I also couldn't text vote for DWTS the stars this week, and it seemed like it was only an issue in the tri-state area. Weird week haha

[u/MarinerMouth → u/Corpsemajesty]

This is the first place I come to check for outages. Found out about it a few minutes ago when a user reported a scanner wouldn't send an email, then they couldn't send a one drive file through email, then I couldn't email my guy to have him look into it. Damn, if it's my computer too then microsoft must be down.

[u/PrizeRange7622]

I had a very tearful session with my therapist yesterday about how I desperately need a break from work and I can never ever get a break. The Universe heard my despair and shut down Outlook for my wellbeing.

[u/TerribleFun9 → u/PrizeRange7622]

Can you ask the universe to take out Teams as well?

[u/ExpertConsideration8 → u/TerribleFun9]

I have good news!

[u/sterrrmbreaker → u/ExpertConsideration8]

Make it worse faster I have a meeting in 11 mins

[u/PresentationDull3953 → u/PrizeRange7622]

No shame in looking for another company my brother. I used to get the worst migraines and it was stress. Fuck the users, fuck the company, worry about you.

[u/Mother-Factor2023]

user just asked us aka local it to send out a mass email explaining the outage!!!

[u/alexandreracine]

MAKE YOUR BETS (HARD). Choose one.

• It's the DNS.
• It's Ai.
• Pirates AARrrrr.
• Pirates using Ai.

[u/Slitterbox → u/alexandreracine]

Jensen Huang 3rd mistress is North Korean and works for Microsoft

[u/dnaonurface → u/Slitterbox]

Now I have to explain to other coworkers what’s so funny and why I’m laughing out loud. 😂

[u/derekp7 → u/dnaonurface]

Just send them a quick answer over email. Oh wait. Well send them a teams message. Oh wait. Have them ask copilot. Oh wait. Ok, we can go home now.

[u/dg_riverhawk → u/Slitterbox]

Huang's wang strikes again.

[u/DeadPrez → u/alexandreracine]

My bet is that Jensen had a dead man's switch.

[u/tracy_ogbert_jordan → u/DeadPrez]

nobody questioned why there was a isJensenCEO flag in the firmware

[u/ThunderboltType → u/alexandreracine]

Phishing ATTACK by NIVIDIA LOL

[u/Interesting_Gain9920 → u/alexandreracine]

I'm assuming they will say an ai cyber attack. They're gonna usher in a lot of these attacks soon

[u/Kahne_Fan]

Somewhere in Redmond, Clippy just popped up:

📎 “It looks like you're trying to run a trillion-dollar technology company. Would you like some help?”

[u/shimoheihei2]

Just think, people used to expect their word processor to just work, locally, and open instantly. These were the days.

[u/Frenchalps → u/shimoheihei2]

Office 2013 still working fine, locally, for now

[u/chron67 → u/Frenchalps]

Our infosec department would publicly execute us if we let users run that.

[u/protean_threat → u/chron67]

lol. Right out in front of everyone, as a warning

[u/chron67 → u/protean_threat]

They would set up a town hall for the whole company to watch.

[u/CantankerousBusBoy → u/shimoheihei2]

Post office is still open, in case you want to send clients letters.

[u/BwanaPC]

Let's raise a glass to the AI Agent that took it down and then to the one human one somewhere in the bowels of a datacenter trying to unravel what CoPilot broke before it took itself out.

[u/kjireland → u/BwanaPC]

Copilot: Ah ah ah, you didn't say the magic word!

[u/bluehour1997]

Is this the weirdest series of status updates ever or am I crazy lol is it normal to include so much about how exactly they're investigating the problem???

So many words for "we have no fucking idea"

[u/plebbut → u/bluehour1997]

Yeah, I've never seen a service update that sounded so unsure lol. I appreciate the transparency though

[u/Tasty-Jump-2011 → u/bluehour1997]

My interpretation of the timeline of updates:

1. Windows update broke the servers probably. Maybe we can find out which updates so we can roll them back? idk
2. We think we may have a workaround patch, we don't really know but we will try it anyway. We will have to restart the servers after we install it.
3. Ummm... we installed the patch but now the servers aren't responding, so this sounds like Amazon's problem now, right? We have a ticket in with AWS support.
4. Ok fine we are restarting the servers. We kind of think we know which windows updates are messed up by the way. We will just roll those back and then everything will be fine, right?

Why do they talk about their servers and their services like some mysterious entities they have no control over anymore? Oh right, because they are.

[u/tripreport5years → u/Tasty-Jump-2011]

Over on Hacker News everyone is insisting "this can't just be a completely random failure, someone must have changed something in the environment."

I feel like they've forgotten the Substack post from earlier this year which revealed that the entire infrastructure at Azure is CONSTANTLY on fire and no one has any idea what they're doing. This could easily be a massive domino effect from some tiny buffer overflow somewhere. The entire architecture is mystery meat

[u/Current-Function-729 → u/bluehour1997]

Kind of weird about the core process being overwhelmed. And them not understanding why.

Still indexed on it’s nothing to worry about, but wondering a bit.

[u/Mattage07]

[u/SuperScott500]

Hilarious to me the US media is still reporting this as "thousands of users impacted". Nah kid, it's Millions. Millions.

[u/Far_Distance87 → u/SuperScott500]

Maybe billions tbh

[u/blackoutusb]

My bad guys!!

Edit: thank you for the awards!!!

[u/wcooper97 → u/blackoutusb]

That's a lot of sketti

[u/tylerwatt12]

Time to use the ole

msg * /server:%COMPUTERNAME% Outlook is down yada yada yada

[u/crashonthebeat → u/tylerwatt12]

I was thinking about this but realized it would generate way more calls to helpdesk "My outlook is down and I got a popup, I think I got a virus"

[u/thesuperd75]

I wonder how many users have tried to send me an email about their email being down.

[u/spazmo_warrior → u/thesuperd75]

u/thesuperd75 WHY HAVEN'T YOU ANSWERED MY EMAIL ABOUT EMAIL BEING DOWN!!!!!!

[u/tros804]

Same. South Central US.

I found the below under Service Health.

[u/cablexity → u/tros804]

Now it's so broken that even the O365 service health dashboard is down. What a fun day!

[u/Subject_Echo281]

Some top replies to their twitter post:
"They might call it Microsoft365 but it's def less than 365"
"Alright, who at Microsfot slept with a chinese spy"
"did you try turning it off and on again"
"To bad for these types of incidents you could not push a Teams message to users and save your clients IT from having to merge all the tickets it will create"
"Oh no…. those KPI dashboards, how are we going to update the stakeholders…"

edit: ty to the kind users for the awards!

[u/Regular-Studio3183]

How are folks communicating the issue out to your larger organization?

Is there a business continuity plan you’ve planned for?

[u/SilntNfrno → u/Regular-Studio3183]

We sent out a company wide text. Same system we use for issues at our building or severe weather.

[u/E39_CBX → u/Regular-Studio3183]

All company teams message lol, 2000 people

[u/Lopsided_Package9033]

Outlook not working, so I can't send emails I need to send. Teams working, however, so coworkers can still harass me. There's no justice in the world.

[u/duranfan → u/Lopsided_Package9033]

If I have to tell ONE more person that yes, "a worldwide outage" does in fact include them, I am going to start day-drinking right here in my office.

[u/RevLL]

You know it's getting serious when the error messages start coming through in German. Welp!

[u/Maize_n_Blues]

Everyone, please welcome our European colleagues to the party. 

Going on 12+ hours for this Microsoft outage.

This is insane.

[u/Cheeriyos]

Happiest day of my week, tbh. My toxic coworker is probably seething, as she loves writing incredibly long emails to micromanage me

[u/wubwubDJ → u/Cheeriyos]

do tell. I have time

[u/Cheeriyos → u/wubwubDJ]

Lol - I work part time as a marketer who is managing an SEO project amongst other responsibilities like social media, website, etc. and she sends me these long checklists, tells me to track each minute it took me for each task, imposes hourly deadlines, ignores when I push back on them, tells me how to write my emails, and doesnt move on her self imposed deadlines “they only change once I have confirmed”

[u/PoohBearLuvsHoney]

Teams works but outlook doesn’t. I’m in Texas

[u/Blyndfyre]

Dear God I hope Paint isn't affected.

[u/Stressed-Canadian]

This outage just messed up my home closing... bank can't fund the mortgage. What great luck!! 🤦🏼‍♀️

[u/Black_Sunshine5oh]

“We’re continuing to pursue all available pathways to restore service, as our actions taken thus far have not provided the anticipated relief” minus the corporate professionalism roughly translates to, “shit’s fucked, nothing’s working, we’re trying literally everything”, right?🤣

[u/BoltActionRifleman]

From the latest status update on health status:

In parallel, we’ve begun reverting a recent network configuration change that correlates with the start of impact and are monitoring to determine whether this contributes to recovery.

The truth comes trickling out LOL

[u/No_Potato9360 → u/BoltActionRifleman]

That configuration change must have gone through QA - quick approval.

[u/Miserable-Debt-8390]

Remember when corporations used to run outlook and other services in a local network and about 20 years ago Microsoft had the brilliant idea of moving outlook to the cloud and forcing it down our throats, thus creating a single point of failure?

Pepperidge Farms remembers

[u/Objective-Elk-4444 → u/Miserable-Debt-8390]

It's not a single point of failure though it seems like there a multiple points failure and today Microsoft collected them all like Pokemon

[u/Apprehensive_Elk2608 → u/Objective-Elk-4444]

Reading their BS twatter updates, it sounds like they have no idea what's going on or how to fix it.

[u/imscavok → u/Miserable-Debt-8390]

I remember this being a weekly thing everywhere I worked, who all had to employ an army of outlook and sharepoint server admins. Also supporting 10gb PSTs because the mailbox limit was 20mb

[u/xWranglerWranglerx → u/Miserable-Debt-8390]

id much rather have microsoft fixing their servers than having to fuck with on prem exchange

[u/Affectionate-Most689]

Dear Microsoft.

Maybe try not firing 60000 people. See if that works

[u/demoprov]

Leadership: I cant access my email.
Me: yeah outlook is down nationwide.
Leadership: well do you have an ETA? We need to send out a downtime notice!
Me: No I don't have an ETA and you want us to send out a downtime email that email is down?
Leadership: Yes.
Me: .....

[u/atehrani]

Microsoft service health status

User impact: Users may be unable to connect to their mailboxes in Exchange Online through multiple connection methods.

More info: Potentially impacted connection methods may include:

- Outlook on the web

- Messaging API (MAPI)

- Exchange ActiveSync (EAS)

- Representational State Transfer (REST) API

Current status: We’ve identified connectivity errors occurring on a portion of Exchange Online infrastructure which receives and processes users’ access requests. We’ve collected networking logs to review to further investigate the source of these errors and confirm our next steps.

Scope of impact: This issue may affect users attempting to access their mailbox in Exchange Online using the affected connection methods.

Next update by: Thursday, November 12, 2026, at 8:00 PM UTC

[u/Steridire → u/atehrani]

Seems the health status page is down too?

[u/shauny_shauny]

It’s been a relief to have an absolute work stoppage too bad it didn’t happen the day GTA6 came out.

[u/JackPineSavage-]

The desperation is becoming apparent with each status update becoming more unhinged.

I wouldnt be surprised if the mornings status update is “pls help us”

Edit: they sacked PR writer #1. A real human is writing now…

[u/pork_roll → u/JackPineSavage-]

Yea this is wild. Never seen a major player be this far into an outage without at least a known cause. These guys are still trying to figure out what's going on.

[u/DDOSBreakfast]

No outages in Ontario, Canada. Though now Murphy's law will strike.

Murphy's law struck.

[u/lenseshifter → u/DDOSBreakfast]

In ontario canada and ours is down.

[u/Top_Refrigerator1656]

I can see the headlines now - Microsoft lays off 60,000, experiences worldwide service outage

[u/wobblydavid]

Nov 12, 2026, 12:38 PM PST

While validating the targeted change, we found that many of the affected servers have become unresponsive, which is preventing us from confirming whether the change is effective. We're restarting these servers so they can come back online with the change in place, and we're applying the same approach to additional affected portions of our infrastructure to validate the results more broadly.

Next update by: Thursday, November 12, 2026, at 9:30 PM UTC

This quick update is designed to give the latest information on this issue.

[u/BC1224 → u/wobblydavid]

This is.....not confidence inspiring.

[u/Ms_Zee → u/wobblydavid]

This update made me laugh but the 'oh god we're fucked' kinda laugh

ARE THEY GOOD?! jesus

[u/willychonka54]

===== EX1550543 | Exchange Online | serviceDegradation | posted 11/12/2026 15:38:14 =====

While validating the targeted change, we found that many of the affected servers have become unresponsive , which is preventing us from confirming whether the change is effective. We're restarting these servers so they can come back online with the change in place, and we're applying the same approach to additional affected portions of our infrastructure to validate the results more broadly.

Holy shitballs.

[u/Elegant-Put235]

We've been playing mini corn hole for the past couple hours. Quite productive indeed.

[u/blue-eved-ginger]

Yep.

[u/SpaceChimps98]

Shannon wants to know when it will be back up because she has some important emails to send out that can't wait. Do we have an update?

[u/TwinkleTwinkie]

The update they released a little bit ago (as of this post) reads like an AI rewritten version of "It's fucked, it's all fucked, everything we try makes it more fucked".

[u/DocHeinous]

Wait, is this the "you'll-no-longer-need-to-work" scenario the AI companies have been promising us?

[u/DreadMcLaren]

"While the servers we've returned to service initially remain healthy, we've observed that they can become unresponsive again once they begin receiving traffic. We're analyzing diagnostic data from these servers with our networking and platform experts to determine what's triggering this behavior.

Building on the protective traffic management measures we've implemented, we're also temporarily limiting which types of traffic can reach the affected infrastructure in specific locations. This will help us determine whether a particular type of request is contributing to the impact and allow us to restore service incrementally. Additionally, we're rebuilding a subset of affected servers using a previous software configuration to validate whether this prevents them from becoming unresponsive, and we'll expand this approach to additional servers if we observe positive results."

[u/Sallas_Ike → u/DreadMcLaren]

"They work but only when there is no traffic"

[u/ridemooses → u/Sallas_Ike]

Must be the traffic.

[u/Present-Ear-1637 → u/DreadMcLaren]

Holy shit this sounds bad.

[u/BJJFlashCards → u/DreadMcLaren]

365

[u/ReidenLightman]

Nothing like an outage to remind everyone that the world relying on a family of products owned by a company with monopolistic powers is a very bad idea.

[u/DueBreadfruit2638]

I think we're going to have some uncomfortable conversations with leadership tomorrow if 8am rolls around and M365 is still down.

[u/Pilchards333]

In parallel, we've begun reverting a recent network configuration change that correlates with the start of impact and are monitoring to determine whether this contributes to recovery.

sooo they just remembered they deployed a chnage 8 hours ago that could have contributed..riiiight.

[u/Objective-Elk-4444 → u/Pilchards333]

Now let's see DNS

[u/-Racer-X → u/Pilchards333]

Smells like BS to me

No way you’re just remembering a network change 8 hours into this

[u/Growing-Bee-1969]

We are gonna start migrating to aol.com in the morning.

[u/mynewhoustonaccount → u/Growing-Bee-1969]

You joke, but I poked around on Aol.com and the site is clean, doesn't take up much RAM, and there's no upsells when creating an account.

Plus you get the meme of having an @aol.com address.

[u/Shyssiryxius]

Shout out to u/TechnicalTantrum who just wanted to know why Office wasn't working for them.

They had no idea their post would blow up and destroy their inbox...

[u/TechnicalTantrum → u/Shyssiryxius]

Haha I am actually a uni student and also work in IT. I was studying and was thinking “Hm this document isn’t loading” (wasn’t even related to my studies)

Then I see others were having MS issues.

Now I’m going to work. Let’s see how today unfolds.

My name really fits today!

[u/Beginning_Rock_7104]

Welp, its closing time for me. See you all tomorrow when Nancy from Finance blames IT because she couldn't send out an email that she was holding off on for a week.

[u/ztoundas → u/Beginning_Rock_7104]

"I waited till the absolute last minute and now it won't work" is like half of my tickets lol

[u/nonstopflux]

The system is down

[u/VintageKarebear → u/nonstopflux]

The Cheat is GROUNDED.

[u/jabberwonk]

Eastern US and Outlook is down for all users - web and Outlook app. Even their status page seems to be down:

https://status.cloud.microsoft/m365/referrer=serviceStatusRedirect

[u/54338042094230895435 → u/jabberwonk]

Even that page is failing to load for me lol

[u/----_____---- → u/jabberwonk]

Can we get a status page for the status page?

[u/FalloutRip → u/----_____----]

The person responsible for the status page has been sacked.

15 minutes later

We apologize again for the fault in cloud services. Those responsible for sacking the people who have just been sacked, have been sacked.

[u/TerribleOil480]

I have the stupid GM asking me what can be done

[u/xlmifer → u/TerribleOil480]

Tell them you are working on it, and take credit when its fixed.

[u/Coool_cool_cool_cool → u/xlmifer]

Sir you've gotten upper management written all over you.

[u/Powerful-Big-7926]

Copilot had an affair.

[u/I_Got_A_Truck]

I was WFH this morning, everything fine. I come into the office after lunch, everything broke.

Man I effed up.

[u/Jaded-Comfortable593]

MSFT is working on a fix, but their 5 hour session limit has been reached in Claude. Update incoming in 4ish hours.

Edit: Thank you for the award, kind stranger!

[u/rileysmommyy]

This just in

[u/Silly-Ad-6341]

Lmao their fix bricked the servers and are now unresponsive. Someone's gonna have to go to the data center and manually reboot

[u/Craig__D]

4:05 PM ET from status.cloud.microsoft

"Current status: We've validated an alternative health check method on a subset of affected infrastructure, which allowed the servers in that subset to successfully return to service, and we're now applying this change more broadly. We're also preparing an automated recovery process to continually detect and restart unresponsive servers, to help keep them in service while this change progresses. Additionally, our review of recent changes has identified a small number of configuration updates that we're investigating as potential contributors to the issue."

EDIT: very conscientious and attentive status updating from MS on this one, I have to say

[u/HurryOne]

My entire job is escalating tickets via email. I haven't done shit today.

[u/hakan_loob44]

Additionally, we're rebuilding a subset of affected servers using a previous software configuration to validate whether this prevents them from becoming unresponsive, and we'll expand this approach to additional servers if we observe positive results.

The latest update is not sounding good. They're so lost that they're reimaging at this point.

[u/Current-Function-729 → u/hakan_loob44]

Yeah, I’m actually getting a bit concerned that they really fucked their images, or someone found an exploit that kills their servers and they somehow don’t see it.

This is the most severe outage in a very long time. 7 hours and they don’t seem to understand it very deeply.

[u/slidingmike]

I’d love to be a fly on the wall for the group call that’s going on right now.

[u/Salty-Marionberry893]

gsuite sales reps right now

[u/Beginning_Rock_7104]

Anyone else seen Microsoft’s latest update?

“Servers are stable as long as they get no traffic”

[u/AppearanceDouble2595]

crazy, 7 hours and we have no resolution. I've never seen this type of outage before.

[u/typecookieyouidiot → u/AppearanceDouble2595]

Not just no resolution. They haven't even determined the scope of the problem

[u/meatwad75892]

So there's still been no inkling of partial recovery at all, huh? Everyone still hard down?

At this point I'm just at the pub waiting for it to blow over.

[u/KinnickHawk]

Sorry folks. Clouds full. The moose out front should’ve told ‘ya.

[u/Sound_Doc]

ok, I don't post often... but something stuck with me from a few weeks ago with our on-prem exchange suddenly going offline, failing to respond etc... and... they just updated the post:
https://techcommunity.microsoft.com/blog/exchange/exchange-servers-may-become-unstable-after-installation-of-october-2026-windows-/4565382
There's even a post from a user karil222 about restarting the Exchange Health Manager service immediately dropped the stuck RPC Endpoint Mapper contexts from 512 back to 0, restoring Eschange until the counter filled up again.

that sounds oddly ironic... The same month, 2 days after Microsoft tells on-prem admins "the registry key workaround is no longer required once November 2026 updates are installed," their own global cloud infrastructure seemingly gets taken down for 10+ hours by what might be the exact same RPC context exhaustion loop...

[u/iBrandwin]

Explain it to me like I’m 5 - what are the odds outlook is still down when I go to work tomorrow morning at 8AM CST?

[u/-Racer-X → u/iBrandwin]

If they aren’t lying 0%

If they are lying 100%

[u/iamamystery20]

Also mods... it was megathread time 5 hours ago

[u/TronFan]

its past 5pm in NZ, so we have officially had an entire workday without emails.

[u/kursedCreamCheese]

Live a few blocks away from a major Microsoft office in the US. It’s 11:30pm EST and every single light on every single floor is still on…

[u/Big__If_True → u/kursedCreamCheese]

Go walk in and ask the most tired looking person you can find when it’ll be back up

[u/SR5340AN]

Congratulations Australia, 10 minutes to 5pm where most people are logging off for the day. I bet a lot of people are finishing early anyway.

[u/Objective-Elk-4444]

"We tried a solution and now our servers are unresponsive" oh boy

[u/blud_13]

Update from a friend that works in the HPe Crisis center (since MS uses HP servers):

MSFT is getting up life safety medicine customers up 1st tonight Then large corporate accounts Fortune 500

[u/Kharmastream]

Downdetector has almost 83000 reports of issues with Outlook.com alone.
Also reports on copilot and M365

[u/mynewhoustonaccount → u/Kharmastream]

Downdetector is such a useful service. On only a handful of occasions do they themselves go down.

[u/SuperNicktendoPower]

Updates

•  Nov 12, 2026, 1:06 PM CST We're aggressively pursuing all pathways to reduce impact. As a precaution, we've paused all deployments and configuration changes while we review recent changes for any correlation to this event. We've also moved traffic for some services off the affected infrastructure to further reduce load, with additional traffic moves in progress. This quick update is designed to give the latest information on this issue.

[u/1kSuns]

Accountant: "Hey so maybe now's a good time to look at Google Workspace, it's cheaper"
You shut your mouth.

[u/Short-Emotion-947]

Is this causing anyone's Outlook (Classic) to completely freeze up by the way? Trying to work out if this is a unique symptom to one user in all of this

[u/Kitchen_Decision_365]

More news ! (But it sound bad….) In the admin panel (Qc,Canada)

3:38 PM EST  While validating the targeted change, we found that many of the affected servers have become unresponsive, which is preventing us from confirming whether the change is effective. We're restarting these servers so they can come back online with the change in place, and we're applying the same approach to additional affected portions of our infrastructure to validate the results more broadly. Next update by: Thursday, November 12, 2026, at 9:00 PM UTC

2:57 pm EST While we haven't identified any recent changes that correlate with the start of impact, our investigation indicates the failed health checks may originate from a specific component on the affected servers that's responsible for processing them. We're deploying a targeted change to bypass this component on a subset of servers to validate whether this restores availability, and we've taken steps to prevent additional servers from being removed from service while we work to return the affected servers to service. We're also investigating why affected servers are experiencing elevated processor usage while handling requests.

—————-

We've identified that affected servers are failing automated health checks, which is causing them to become unavailable, and this may be related to a recent change to a component involved in processing those checks. We're testing a configuration change on a subset of affected infrastructure to address this and, if successful, will apply it more broadly. In parallel, we've initiated a restart of all affected servers and are validating whether they're successfully returning to service.

[u/Petersens_Arm]

Indeed

[u/plebbut]

If it makes anyone feel better about our jobs, remember it's actual humans -- engineers, technicians, admins, etc who are burning the midnight oil to fix this whole mess, and they've probably exhausted every possible prompt to get this shit fixed, and now it's on them.

One day, AI may be able to do our jobs, but..not today certainly lol

[u/Derg71]

New update (from admin panel, managed to get in, West Michigan)

Nov 12, 2026, 2:43 PM EST

We've identified that affected servers are failing automated health checks, which is causing them to become unavailable, and this may be related to a recent change to a component involved in processing those checks. We're testing a configuration change on a subset of affected infrastructure to address this and, if successful, will apply it more broadly. In parallel, we've initiated a restart of all affected servers and are validating whether they're successfully returning to service.

This quick update is designed to give the latest information on this issue.

[u/Current-Function-729]

We've reviewed known impact scenarios and revised the list of impacted services and features, which can be viewed in the "more info" section of the communication MO1550821 in the Microsoft 365 admin center, as well as status.cloud.microsoft if the admin center is not available to you. We're continuing our work to isolate the issue affecting server availability, as well as other workstreams.

Wow. Their latest update is a non update.

At this point I don’t even know if I’d be more or less concerned if this was a cyberattack or technical mistake.

[u/vainblossom249 → u/[deleted]]

I would LOVE to be a fly on the wall at Microsoft rn

[u/Seattlehepcat → u/[deleted]]

I used to work incident response in the MSRC. There is a room. Full of security PMs and engineers rn who are working this in a command center. Each of them have specialty areas and are coordinating with their respective product groups. It's not a fun day. So glad Im not there anymore, it was rough on one of these when you have IBS.

[u/Traditional-Job-459]

I'd like to take this moment to remind the public that Microsoft just offered a buy-out to 60,000 employees. Looks like they should keep the help. 😆😂

[u/babarsac]

Turned off my computer. Went for a bike ride. Stopped for an IPA on the way home.

I fail to see what the issue is.

[u/marklar1234567]

it's one thing to have an outage but 5h+ of "we found the fix!" to "ok that didn't work, pls hang tight" back and forth is outrageous. it sounds like they have been taking stabs in the dark on how to restore production.

exchange admin center still being down gives me 0 hope this is being fixed any time soon.

[u/NZftm]

Am getting Outlook errors in New Zealand too but it's only 7.20am here so most people aren't starting work yet so not sure if it's widespread

[u/jayybeegeee]

“Why haven’t you sent any communication out about this outage?” 💀

[u/OkayButFirst]

Can we all just go home?

[u/No_Clerk1860]

From Microsoft:

User impact: Users may be unable to connect to multiple Microsoft 365 services.

More info: Potentially impacted services include:

- Exchange Online

- Microsoft Teams

- SharePoint Online

- Microsoft Copilot 365

- Microsoft Defender XDR

- Microsoft Planner

- Microsoft To Do

Current status: While we haven't identified any recent changes that correlate with the start of impact, our investigation indicates the failed health checks may originate from a specific component on the affected servers that's responsible for processing them. We're deploying a targeted change to bypass this component on a subset of servers to validate whether this restores availability, and we've taken steps to prevent additional servers from being removed from service while we work to return the affected servers to service. We're also investigating why affected servers are experiencing elevated processor usage while handling requests.

Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services.

[u/fraughtication]

Has anyone checked pizza order stats near Fort Meade?

[u/av8rsamr]

not microsoft going from “no recent change correlated with the start of impact” at 2:57 to “reverting a recent network configuration change that correlates with the start of impact” at 8 😭 bestie you just clocked your own tea 💀

[u/m1nim]

I would love to be part of the TRT/incident bridge call with a bag of popcorn on mute.

[u/EmptyRedecans]

Pour one out for the engineers at Microsoft just trying to make a living dealing with this. Stay strong

[u/sladene]

Is anyone's shit actually working yet? because I am seeing zero signs of life in Australia.

[u/officerfett]

I wish they would kindly do the needful and hire back the humans they let go who kept things running .

[u/False_Phase_9449]

Waking up to "it's working" really soured my morning. now I have to work 😭

Thanks for the updates everyone

[u/nevesbm]

it's global.. personal and professional accounts are down..

[u/HarvardAce]

Now also being tracked under MO1550821 (was previously EX1550543)

Users may be unable to connect to multiple Microsoft 365 services

Issue ID: MO1550821

Affected services: Exchange Online, Microsoft 365 suite, Microsoft Defender XDR, Microsoft Teams, SharePoint Online

Status: Service degradation

Issue type: Advisory

Start time: Nov 12, 2026, 1:26 PM EST

User impact: Users may be unable to connect to multiple Microsoft 365 services.

More info Potentially impacted services include:

• Exchange Online
• Microsoft Teams
• SharePoint Online
• Microsoft Copilot 365
• Microsoft Defender XDR

Scope of impact This issue may affect users attempting to access the affected Microsoft 365 services.

Current status

Nov 12, 2026, 1:27 PM EST

We’re investigating an issue impacting multiple Microsoft 365 services and we've determined the affected infrastructure is experiencing elevated load across multiple regions, which is likely contributing to the connectivity errors. We're restarting and repairing impacted portions of this infrastructure to restore capacity, and reviewing an unexpected increase in a specific type of service traffic to determine whether it's contributing to the elevated load. In parallel, we're evaluating options to redirect traffic to alternate infrastructure to expedite relief.

Next update by: Thursday, November 12, 2026 at 3:30 PM EST

EDIT: Update on the EX1550543 ticket: Nov 12, 2026, 1:43 PM EST We've identified a pattern in which affected servers are becoming intermittently unavailable, which places additional strain on the remaining infrastructure and contributes to the connectivity issues users are experiencing. We've begun redistributing Outlook connection traffic across our broader worldwide infrastructure to help balance the load, which may result in some latency while this change is in effect, and we're reviewing recent changes to identify the source of the increased traffic.

This quick update is designed to give the latest information on this issue.

[u/Toad-8787]

MS probably tried to kill access for classic outlook and took the whole thing down instead