Upload problem with Backblaze on 64 bit computer (Intel Apollo Lake?) (possible workaround).

** This is now fixed, see https://rewster.uk/2019/07/10/upload-problem-with-backblaze-on-64-bit-computer-intel-apollo-lake-finally-fixed-after-18-months/ **

IMPORTANT: The workaround in this article is NOT supported by Backblaze, my ticket with them was closed before the problem was resolved on my 2 computers.

If anyone has Backblaze stuck on ‘Producing File Lists…‘, please add your computer CPU and Motherboard information to the comments, so Backblaze will do something about it, Thanks

I recently decided to give Backblaze another try, tempted by the unlimited backup for $5 a month.

I have tried it before but did not like that I could not select only the folders I wanted to backup, ie OneDrive, instead you have to jump through hoops to exclude everything else.  Even if I move my OneDrive to my storage drive, the C drive cannot be excluded.

On the machine I installed Backblaze it would not backup, just reports that it is producing a file list, it appear that bztransmit64.exe was crashing with an Access Violation Error.  I reported to Backblaze and they are currently helping to resolve that issue.  This machine has an Intel chipset whereas the machine the backup worked on was an AMD.


I have managed to figure out a workaround for version which might help others with the same issue:

After running the bztransmit64.exe -testify I get the crash but not with bztransmit.exe -testify

So I renamed the bztransmit64.exe (4492 KB) to bztransmit64.old.exe in:

c:\Program Files (x86)\BackBlaze
c:\Program Files (x86)\BackBlaze\x64

Created a copy of bztransmit.exe (2907 KB) and rename the copy to bztransmit64.exe and copied to:

c:\Program Files (x86)\BackBlaze
c:\Program Files (x86)\BackBlaze\x64

It is important to copy to both places, either restart the computer or restart the ‘bzserv’ service, open the Backblaze UI and click backup now.

You can download the new BackBlazeWorkaround.exe copy to the C:\ Program File (x86)\BackBlaze, run as administrator.


BackblazeWorkaround.zip (This zip contains the previous batch file, this does not check that the Backblaze files have been updated)

This workaround seems to force the Backblaze to use the 32 bit rather than the 64 bit version of bztransmit

Backblaze should now start uploading, my install is reporting upload speed of 147GB a day, which is very good.

Click here to get a 30 day free trial of Backblaze rather than the usual 7 days.

UPDATE: Backblaze support believes my Windows 10 install is corrupted, i had already reset and cleaned programs and data and installed Backblaze on the 16 Dec.  When I get time after the holidays I will do a proper install with format.

UPDATE: I have Backblaze on 2 computers ASRock J4205-ITX (not working) and an ASUS M5A99X EVO (working), I just installed on my Beelink AP34 and getting the same issue as the ASRock J4205-ITX, both are Apollo Lake chipset so this MAY be the issue.

UPDATE: This article was mentioned on Reddit, one user says it is possible that this could be an issue.

UPDATE: After 18 Months this is now fixed see article, https://rewster.uk/2019/07/10/upload-problem-with-backblaze-on-64-bit-computer-intel-apollo-lake-finally-fixed-after-18-months/

24 thoughts on “Upload problem with Backblaze on 64 bit computer (Intel Apollo Lake?) (possible workaround).

  1. Great tip, thank you! My Backblaze was stuck on Producing filelists and this solved the problem. FYI: I have an Acer Aspire XC-730 with an Intel Celeron CPU J3355@2.00 GHz.

  2. I have encountered the same problem. Your workaround did work! Thank you!

    The problem PC is Lenovo Ideapad 320; Windows 10 x64; Intel(R) Celeron(R) CPU N3350 @ 1.10GHz; Northbridge Intel Apollo Lake Host Bridge rev. 0B; Southbridge Intel Apollo Lake LPC Bridge rev. 0B

  3. This worked like a charm, thank you so much! Was tearing my hair out, and Backblaze support wasn’t a lot of help. I am on Lenovo Ideapad 320 with Intel Celeron N3350. Thank you again!

  4. Thanks for the comment, this is another Apollo Lake chip. Updated the article with a link to a Reddit discussion about a similar issue.

  5. I’m seeing the same issue on a Pentium Silver J5005 (Gemini Lake). This workaround works great.

  6. Thanks, that fixed my Backblaze on my ACEPC AK1. Tech support never mentioned that problem. they kept running me in circles blaming it on Windows Defender. What a joke.

  7. Seems like Backblaze did an auto-upgrade on Oct. 8, now it’s once again stuck on “Producing File Lists.” I tried the fix again, but so far no luck. Maybe I just need to wait a little longer. I used the bztransmit.exe from the new upgrade — possibly a mistake? Filesize is 2,564,960 bytes. If this ends up working, I’ll come back and report. But so far, no joy. 😦

  8. Hi, mine stopped backing up on the 9th Oct with the forced update, I ran the ‘backblaze_Workaround.bat’ as administrator and it started backing up again. It might be best to make sure you manually stop backblaze before running the script.

  9. Sorry, yes I have reported to WordPress and they are investigating. All my links are now to external download site download.rewster.uk

  10. No problem, It is annoying that BackBlaze don’t just fixed the issue, I will contact BackBlaze again to see if they are making progress.

  11. Gemini Lake (J5005) owner here. Latest update broke mine too. I complained on Reddit /r/backblaze and the guy who heads up the client development wasn’t too keen on the notion that his pride and joy has issues with our chipsets.

  12. Hello. Firstly, I’m not that tech savvy. I had backblaze on my old laptop and it worked fine. I’ve got a new license now for a new laptop. It’s stuck on producing file lists for the initial backup. My laptop is an Asus Vivobook17 Intel Celeron N4000 1.10ghz. What can I do?

  13. Hi. If you download the Backblaze_Workaround.zip, un-zip it and place in the C:\Program Files (x86)\Backblaze. You will then need to right click this file and select run as administrator, this will swap the files automatically. You should then be able to get past producing file list…

  14. ….and they did it to us again. Is there a way that I can simply force Backblaze to run in 32-bit mode instead of replacing these exe files each time they push an update?

  15. We have encountered the same problem again on our Lenovo Ideapad 320; Windows 10 x64; Intel(R) Celeron(R) CPU N3350 after Backblaze October update.

    I’ll try 32bit workaround and let you know the result.

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