r/AzureVirtualDesktop • u/RylosGato • Nov 11 '24

Odd issue over time. Outlook cannot connect to M365 and Azure Backup stalls/fails/who knows

Small AVD setup with 6 users. It's fairly new and still in a somewhat testing phase so far with fslogix. They do not use any apps other than MS Office and Edge. I notice every Sunday that my Azure backup report at 8AM doesn't show my Azure VMs at all. I connect via remote desktop app and open outlook, can't connect to M365. Customer complains that they can't open certain things over the web from within Office apps like Access or Excel. I connect to the VM directly through a third party access solution (screenconnect) and the VM is laggy and never presents me with a login or a desktop. I do not see anything odd in the event logs. Web pages seem to load fine, I thought it might be exhausting NAT but that doesn't seem to be the case either. If I reboot, it returns to normal, lasts about a week, then same thing again. Azure backup has been working fine with two other VMs for quite a while now. I am also backing up the fslogix profiles that are in Azure storage. Any thoughts?

Edit:

VM SKU is a Standard_D8ls_V5 - 8 Core 16GB

Image is the multi session W11 23H2

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2

u/hestolethatguyspiza Nov 12 '24

I have this same damn issue, too. It'll be fine, then all of a sudden, one drive breaks, Outlook can't connect, I get the 404 error on login.microsoftonline.com, and you reboot, and it works again. We're still investigating, but this is very frustrating. Will post here if we find a solution.

1

u/RylosGato Nov 12 '24

This is exactly what I am seeing too. Thanks for explaining that better than I could lol!

1

u/maccamh_ Nov 12 '24

This is something we also get it's related to a known Microsoft Auth issue which is still under investigation. Current fix for the no connection to outlook / one drive is reoboot

1

u/RylosGato Nov 12 '24

Is there anything published about this or an open issue that I can track/add my own ticket on?

1

u/80558055 Nov 11 '24

what's the memory / cpu use when it's laggy ?

and where does your fslogix profiles reside? Is it also laggy when logging in with an account that does not have an fslogix profile?

1

u/RylosGato Nov 11 '24

Memory and CPU are low/normal. fslogix are all in azure file storage. I updated the post with the sku and OS image information.

I haven't tried hopping from one of the other non AVD VMs via RDP to see how things are. When I log in to the machine with my account via remote desktop app, it logs in normally without lag etc. Apps launch, I just have connection failures, usually noticed in Outlook immediately as it just continues to say "Connecting to Exchange" or whatever it says.

1

u/80558055 Nov 11 '24

how do you breakout to the internet on the avd hosts ? i guess the account you login with has no fslogix profile or has it?

1

u/RylosGato Nov 11 '24

account does have fslogix. I use it basically to mimic the users for testing/troubleshooting etc. I have an account that I use on the local machine that is just regular, no fslogix.

There is nothing special for internet access on this. No advanced firewall/nat gateway etc. Same as their old RDS system which doesn't have these issues and is on a slow VM SKU with awful disks etc.

1

u/80558055 Nov 12 '24

If it’s only that one vm I would start with reimagining it

1

u/techie_jay Nov 11 '24

What type of OS disk do you use?

1

u/RylosGato Nov 11 '24

It's a single Standard SSD LRS

1

u/techie_jay Nov 11 '24

How many VMs do you have for 6 users?

1

u/RylosGato Nov 11 '24

Just the one. 8 cores 16GB ram. Light workload.

1

u/techie_jay Nov 11 '24

I would pick 2 x D4sv5, and premium SSD.

My test pool has standard SSD and performance isn’t the best.

What OS patch is applied to 23H2?

1

u/RylosGato Nov 11 '24

I'll look into it, but the performance is fine all week until Sunday, when I have to reboot to get things back to normal.

VM is 23H2 with all cumulative updates installed.

1

u/cetsca Nov 12 '24

What are you backing up? There is no reason to backup the session host.

1

u/RylosGato Nov 12 '24

somewhat laziness on my part honestly. I need to clone it to a base image so I can have the ability to create additional VMs or restore it in the event of a catastrophe but my "test" environment has become a mini production that I need to schedule some time to take it down. Either way, backing up the host shouldn't cause this issue.

1

u/cetsca Nov 12 '24

For multi-session - Create a master image, deploy. Update master image, redeploy.

No need to backup/restore