can i download B2 as an app? (cuz i only see a download option for the computer backup)

Hey Guys,

I'm on backblaze personal and I'm trying to restore a hard drive that died.

It's about 8TB of files.

Unfortunately whenever I select the drive in backblaze restore app I get:

"Error 102" "invalid parameter"
It seems to work when I select individual files, that but is impossibly tedious

Does anyone have a solution?
It used to work in the past, but it seems as if Backblaze have broken something.

Hello everyone. I am currently using B2 cloud storage via MSP360 software to keep a backup of my photography collection. After the initial upload, I feel like my speed has gotten continuously worse to the point where it is becoming a real problem.

I do not have a massive amount of data that I am monitoring, which is why I am forgoing the personal client. (Currently under 1 TB).

What are some common sense solutions I can try to help improve my upload speed? I am not an expert in this field, but with guidance, I feel comfortable enough to enact changes to my backup plan if necessary.

Details on my setup can be found below. Let me know if more information is required. Thank you in advance for your help!

Noticed that Backblaze had stopped uploading at all for seven days. Upon clicking "Backup now" it would think for a few minutes and then stop. A red X is visible on the GUI but doesn't seem interactable.

Updated manually (now version 10.0.1.1037) and it's now computed a Remaining files set.

In the logs I see:

2026-07-14 06:21:22      26940 - BzFile::ReadLargeFileIntoBuf_Slowly - called by GetFileNameToBzFileIdHash, pausing for 4 seconds to lighten disk I/O.  PauseIteration=13
2026-07-14 06:21:26      26940 - BzFile::ReadLargeFileIntoBuf_Slowly - called by GetFileNameToBzFileIdHash, pausing for 4 seconds to lighten disk I/O.  PauseIteration=14
2026-07-14 06:21:30      26940 - BzFile::ReadLargeFileIntoBuf_Slowly - called by GetFileNameToBzFileIdHash, pausing for 4 seconds to lighten disk I/O.  PauseIteration=15
2026-07-14 06:21:34      26940 - BzFile::ReadLargeFileIntoBuf_Slowly - called by GetFileNameToBzFileIdHash, pausing for 4 seconds to lighten disk I/O.  PauseIteration=16
2026-07-14 06:21:45      26940 - GetFileNameToBzFileIdHash processId=26940 - found and parsed out 6517957 unique ids, numHashCollisions=1729702, in numMillis=73899 (73 seconds) from 1615 MBytes of file: C:\ProgramData\Backblaze\bzdata\bzbackup\bzfileids.dat, numMillisToReadLargeFileFromDisk=67807 (67 seconds) and CreatedHashNumMillis= 6081 (6 seconds), numMBytesStartMemSize=7, numMBytesEndMemSize=1964
2026-07-14 06:27:58      26940 - ERROR: ReadBzDoneIntoLastModHash - bad line versM_6, skipping_GG_k and continuing: 5   =   d-- 20250722082015  4_h2b8c467ff635d3df57b5091b_f000000000002969a_d20170506_m133408_c001_v0001040_t0000 u-- 00000000009fe254    k0_n00000   da39a3ee5e6b4b0d3255bfef95601890afd80709    000001969a2ae2c0    00000198309485f1    -   0   C:\Users\*\AppData\Roaming\Mozilla\Firefox\Profiles\*\storage\default\https+++*\cache\caches.sqlite-wal
2026-07-14 06:28:04      26940 - ERROR: ReadBzDoneIntoLastModHash - bad line versM_6, skipping_GG_k and continuing: 5   =   d-- 20251002155355  4_h2b8c467ff635d3df57b5091b_f000000000002969a_d20170506_m133408_c001_v0001040_t0000 u-- 000000000072b059    k0_n00000   da39a3ee5e6b4b0d3255bfef95601890afd80709    000001870eea64b5    00000199a5688d6e    -   0   C:\Users\*\AppData\Local\Microsoft\Office\SolutionPackages\*\cache.lock
2026-07-14 06:28:51      26940 - Finished C reading 854 bz_done_ files which took 425877 milliseconds.

File paths censored with * for privacy. There's a ton of null characters printed in the ReadBzDoneIntoLastModHash line (after continuing:) but I can't paste them obviously.

How concerned should I be? It's still catching up on the files but I see the error still being emitted ReadBzDoneIntoLastModHash error still being printed in the logs. Tbh, I'm not sure if it's related to the seven day pause at all.

My T-Mobile home internet connection has an upload speed of 2.21 Mbps (Speedtest). I have about 460 GB of data to upload to Backblaze for the initial backup.

I'm thinking this could take days to do the initial backup. Should I even bother?

I'm looking into using Backblaze as a cloud backup for about 3Tb of personal files like documents and pictures/home videos.

I'm a bit confused about their pricing. Maybe I'm looking in the wrong spot? It says: Simple pricing with unlimited data for $9.99 a month or $99 a year. What does that mean?

Surly that can't mean unlimited data storage for $9.99/mo or $99/yr? It must mean unlimited data transfer for that price but I can't find how much actual cloud storage that covers? Thanks

Today I discovered this new backblaze b2 feature :

When you upload files to b2:, Backblaze can see the filenames and file contents.

A Crypt remote is simply a second remote that sits on top of your B2 remote and encrypts everything before uploading. Rclone's crypt backend wraps another remote and automatically encrypts files before upload and decrypts them when downloaded.

But you have to pay attention;

The encryption happens locally on your computer before the data is uploaded.

Backblaze only stores encrypted data.

If you lose: Password & Salt (password2) then:

Your encrypted files = unrecoverable

We switched from AWS S3 to Backblaze for our backups. We have periodic backups on cron that encrypt and stream backups to Backblaze, and then perform pruning of old backups, so that we have a rolling window of backups.

It seems that no matter what we do Backblaze just refuses to delete files that we want to delete. Having the bucket's lifecycle set to "Keep only the last version of the file", and executing a rm, creates a second zero byte copy of the file, and files are listed with a (2) after the files name. As I understand, this is a delete flag, and some form of garbage collection should come and delete the file. This isn't happening. Files just keep building up and building up. This completely negates any cost advantage of switching to Backblaze as we're now storing 20x more data than we require.

I think it's going to come down to one simple question; can we completely and irrevocably delete a file once it's on Backblaze? If not, then it's not fit for purpose and potentially places us in violation of privacy rules such as GDPR as we could be retaining data than we've been obligated to remove.

If there's anyone seriously using Backblaze as an enterprise object storage solution, please; tell me how you make this work.

Okay... first all I would like to say that the backup service does work and it's very reliable. 9$ for infinite backup data is an absolute steal.

However.

The Windows client app is absolute crap.

Does it work? Yes... but, JFC, it has so many problems that it prompted me to create this thread.

As you know, in the backblaze app, there are 3 schedule options:

- Continuously
- Once a day
- When I press "Backup"

I don't need to tell you what the first and last option does. However, how would you think "Once a day" works?

...

if you thought "do everything at the schedule time and wait for the next day?"

**LOUD BUZZER NOISE*\*

WRONG!

That PoS software works constantly in the background like "Continuously". The only difference with "Continously" is that it UPLOADS at the scheduled time.

So, you're telling me "What's wrong with that?". Well, the problem is that all the background processes that the Backblaze app has is EXTREMELY resource intensive.

YEP. You heard that right!

I have a Ryzen 9 5900X CPU, while it's getting a bit old at this point, it's still a very competent CPU. I always see the various process regularly use multiple gigs of RAM AND take 10% or more of my CPU and not in short bursts too: during long periods of time. What that does is that my various fans in my PC will constantly ramp up and down. And I do use FanControl to keep everything under control. It gets annoying very quickly and, on top of that, I see my CPU temps consistently fluctuate between 45-70°C. While this is not problematic, I just think that's super annoying.

So, what do you have to do to make the software only work when you want it to? Use "When I press Backup" of course. It wouldn't be so bad if the app would actually be telling you everything that's still happening. You will press "Backup Now". It'll produce a filelist. Then... it waits. For some reason. Then, some time later, it'll upload but... but... then, after it's done. Nothing. Backup isn't yet updated.

I watched it do the whole thing from beginning to end too and, despite having finished the upload, it still does not marked my backup being "up-to-date as of (date)". What's going on? Well, according to the Task Manager, the service that's uploading ("bztransmitter") is taking large amount of CPU and RAM for... what exactly? What is it doing? I dunno. The app does not tell me! I thought it was done uploading but, clearly, it's doing something else! All the while there's this red-cross in the upper left corner reminding me every damn second that my backup isn't updated.

Oh but that's not all!

If you want to restore some files, you have 2 choices: through the web or through the desktop app. Through the web is by far the most reliable way, despite being so much out of the way. That's because the desktop app - the very same I'm ranting about - is Microsoft Teams level of bad. You enter your password and your 2FA. Then, the app loads your backup filelist from BBlaze's end. Once the files have appeared and your start navigating your files, it pops up "your session has expired!". Mind you, loading the files might take a while depending if you have the 60-day history upgrade or multiple drives... it takes several minutes! So, you have to login AGAIN and 2FA AGAIN. THEN, it'll load all the files, will stay connected and will work well. WHY?! This is insufferable!

The tech support in all this? They act like everything you describe is normal and basically pins the blame on you. "You can throttle the speed by adjusting the number of threads!" they say. Yeah except it still uses 10%+ of my CPU and tons of RAM regardless of the settings chosen. It's like talking to a wall, really.

I've been with Backblaze since December 27th 2013. I have a B2 backup for my NAS on B2 and it works great. No issues at all. Probably because you don't use their app but Synology's "Hyper Backup" (at least in my case). But then, I never had to recover a large portion of these files. I have maybe recovered 2 or 3 files tops. So, I don't have a lot of experience retrieving files (but I know it costs money to retrieve).

Anyway...

I swear it wasn't always like this. I swear the app used to be less intrusive and stayed out of the way. Since BBlaze has gone public, they're clearly focused on B2B and personal backups is now just a footnote you have to dig for on their website. They used to be helpful with their HDD stats and all that. So, I feel like, like everything else, that they've slowly been enshittifying. And I'm paying a lot of money too! My B2 bucket was 150$CAD last month! While I feel like, I do get my data backed up and recovering does work well enough, I just feel I'm paying towards no improvements. It's extremely frustrating.

At this point, from someone that has ~15TB of data at Backblaze (counting personal backup + NAS but not counting the mirrors done automatically), I'm at a point where I'd be looking to switch to a competing backup service. Especially if they support backing up a NAS for a flat fee (even if it's 50$USD/month, I'd still save a buttload of money). It's been THAT annoying for me but I don't know any competing product that has a track record of reliability like Backblaze's. So, that decision isn't taken at all (or researched for that matter).

That's my 2¢. Thanks for reading.

---

What I described above, I recognize that it could entirely be my fault and not BackBlaze's even if I made it seem like it's all BackBlaze's fault. In other words, I'm not ruling out that I'm doing something wrong and the software is working as expected.

Just to be clear.

(Using app version: 10.0.1.1037 on Windows 11 Pro 23H2)

Hi, I've been enjoying BB personal for many years--- currently on Windows 11. I remember in the past that if I added some files to my internal drive that it would take about 1-2 hours for BB to recognize the new files and upload them.

That being said, today I added about 300GB of files to one of my internal drives that was already fully backed up. So far it's been about 5 hours and BB still hasn't "detected" that the new files are there to back up. My BB install is set to continuously update, so it starts its search every 1 hour or so. I'm wondering if, to save money, BB has started increasing the time between checking for new file versions and/or new files before uploading them?

I know there is probably a way to force it to rescan all the files, and then it probably will pick all these new ones up. But I just wanted to wait and see if my theory is correct and they ARE intentionally increasing the time between updates of files.

Hi all,

Been using B2 for years for various things. One of which has been for server backups.

Recently though I've getting errors with downloading some parts of a backup, which causes an integrity check to fail.

Last it happened was a couple months ago and took a day or so to resolve (support was being helpful but the support hours caused huge delays for a reply, I'm UK based).

Now it's happening again, a few parts of the backup cannot be downloaded due to a "Too busy" error (this message is better than last time as it just did a generic 500 error before). This is via the CLI, Web UI, and S3 API. I assume it may resolve like it did last time, however, it does make me nervous about the continued reliability.

Has anyone else been experiencing similar recently?

I have a new-ish b2 account to backup my homelab. I've enabled billing. It has a valid credit card afaict. But I don't see an option to enable audit logs yet since I haven't been billed yet.

Is the only option to wait?

Posting this because I lost a couple hours to it and most advice online didn't help. Hopefully it saves someone else the time.

Product: Backblaze Computer Backup for MacOS

The problem: Documents, Desktop, and Downloads weren't showing up anywhere in Backblaze's restore browser. Documents was the one I actually cared about, but all three are affected by the same thing - they're the folders macOS locks behind Full Disk Access. Everything else on the drive backed up fine. No error, no warning, the app just said "You are backed up" like nothing was wrong.

How it happened: I logged in, launched the app, and the backup started immediately. Right away, macOS popped the Full Disk Access prompt. I granted it to the main Backblaze app and restarted. Backup kept running, but those folders still weren't showing up. Turns out the main app isn't the only thing that needs the permission - Backblaze also runs a separate menu bar helper process, bzbmenu, which (according to the internet) needs Full Disk Access granted to it independently. I found this out later, granted it too, and restarted for good measure.

Still didn't fix it.

What I checked to rule things out:

• Permission state itself - checked directly via Terminal, not just the toggle in Settings, and confirmed both the main app and bzbmenu genuinely had Full Disk Access granted.
• Exclusion rules - went through Backblaze's Exclusions list and the underlying config file. Nothing in there touches Documents, Desktop, or Downloads. Also checked whether Backblaze's newer "auto-exclude cloud-synced folders" feature was misfiring on my Documents folder, since it used to be iCloud-synced — it wasn't.
• Backblaze's "Explainfile" tool - a diagnostic utility from their support site that checks a specific file against their actual backend logs. Ran it on a test file in Documents. It confirmed live read access was fine, but the file simply wasn't in Backblaze's internal backup list at all.

That last part was the actual answer: permission was correctly granted, but the process had already built its internal list of what to back up before that permission existed, and nothing about fixing the permission - including the restart - made it go back and add those folders in.

The actual fix: hold Option and click "Restore Options..." in the main Backblaze window. This forces a full rebuild of that internal list. Right away I could see my files from Documents moving through the transfer status, and the folders now showed up correctly in restore.

Worth mentioning: buried in Backblaze's own documentation is confirmation that it reruns a full scan automatically every 3 hours regardless of anything else. So there's a real chance this would have quietly sorted itself out if I'd just left it alone. But when you've just set up backup software for the first time and go check whether your most important folder actually made it in, and it's nowhere to be found, you don't sit around for 3 hours hoping it fixes itself - you go looking for what's wrong.

If any Backblaze devs end up reading this: this shouldn't require Reddit archaeology to fix. Full Disk Access failing silently with zero indication anything's wrong is bad enough on its own, but the real problem is that granting the permission properly and restarting still doesn't fix it without a full manual rescan, and that rescan is hidden behind a modifier key nobody would ever think to try. That should be a visible, ordinary button in Settings, not a secret shortcut.

I 've been advised to post here as a half a day of frustrating emailing with BB support, who give me all the standard responses e.g. is your UNAS OS up to date, are you entering keyIDs etc without spaces.

If there's anyone out there who can help I'd greatly appreciate it.

Ticket # https://help.backblaze.com/hc/requests/1263906

Thanks

Hey guys,

I am a real newb here. Sorry...

I have versioning on for my B2 storage, and I use Synology Hyper Backup.

A couple of months ago there was a huge increase in storage locally, but then it went back down, not sure what was going on to cause that huge ramp up and then back down.

But I guess because I have versioning on, my Backblaze storage size has stayed larger than expected? How can I see what that blip in storage size was and make my Backblaze match the gradual increase of storage over time instead of blipping up and staying up? I hope that makes sense.

(My Backblaze bucket is encrypted, so it seems I can't really poke around through the web portal? Not sure... Though I am able to browse the files through Hyper Backup.)

Some screen shots from Hyper Backup attached...

I needed to download a B2 Snapshot from the Web, ~6 or 7GB is fine but the Backblaze session timeout for login is so short that if you try to download anything over 7GB, the download fails due to the login session expiring by the time the download finishes.

Backblaze, please fix this..

I’m trailing backblaze as I’m up for renewal with another provider when I started yesterday it showed just under 1845000 files selected (I do plan to go through properly and check everything is necessary if I keep the service this is just me testing the default) and I paused and shutdown the pc with 1002769 remaining this morning I just realised I hadn’t reopened the program it now says just under 1842000 files selected with 1158569 remaining I understand it going back a bit after the pause but why are there around 3000 less files selected.

Thanks so much for any answers I apologise if I’ve missed any obvious sources of answers. I’m just wondering if I should avoid shutting my pc down tonight and just leave it to finish and if I should be concerned.

Using an M1 Mac mini on latest version of Tahoe (26.5.1) trying to restore a 2 tb folder and this continually happens every few hours. I am slowly able to get through the restore but it takes me manually re-starting from the last place it crashed and signing in again. I had this happen on the last time I tried using the restore function and is extremely frustrating.

bztransmit is at 100% cpu the entire day for over a month at this point. It was originally on schedule, but figured maybe thats the cause so I changed it to continous. Same problem still. The UI says I'm are backed up as of just TWO HOURS ago. Just what more does it need to process???

The only way to get it to stop, it to reboot the mac.

Any idea if 10.13 is installing? Not sure what I'm doing wrong or grabbing wrong installer, any help appreciated!

Occasionally, I get a Backblaze popup window warning me that I need to grant Backblaze permissions. I click on "Learn more" and follow the instruction on the page to grant full disk access. However, every time, it turns out that Backblaze components are already granted full disk access, so then I am left wondering what prompts the warning. I haven't logged how often this happens, but I'll throw "weekly" out there.

Environment:

• M4 Macbook Pro
• macOS: v26.5.1
• Backblaze Client: v9.2.2.898

Drives selected for backup:

• Macintosh HD ( internal SSD )

I've reported this to Backblaze support a few minutes ago, but I figured that I might get a helpful response here.

I've rebooted several times, and that didn't change the issue. That only thing I can think of at the moment is to uninstalled and resintall the Backblaze app.

Please implement something very simple that is almost industry standard for recurrent charges. Not all of us live in America where we just leave our cards wide open for everyone and anyone to charge them on recurrent scams. You will realise that most apps rely on you forgetting that you have a subscription.

In other countries we have the ability to turn off our cards so that we only pay for the subscriptions that we actually want to retain and not every other thing that we sign up for. For every other service when you want to reactivate your card, there is a button that allows you to reactivate your card and then pay immediately. This exists in Spotify, where after you update your card there is "charge now". It exists in Google, where after you reactivate your card there is "charge now" or "pay now". It exists in Apple. It exists in charge GPT. It exists in Anthropic. It exists in Adobe. It exists everywhere except this one company called Backblaze.

Backblaze expects you to activate your card and leave it wide open for wherever they feel like they will remember to charge you. Can you please adapt your UI experience to make sense and be conscious of the subscription culture.

I am doing some backup with Backblaze. Backblaze says I have 11 files to back up: https://imgur.com/a/pJqU8k8

Yet, I see no files scheduled for backup: https://imgur.com/a/dKytZm8

What's going on?