I don't think there's been any hack / malware as I just took the unbroken backup of the same files, split off the first 8,388,608 bytes and compared them to the 8MB sized broken downloads and they are identical. Nothing has changed about the files, something on GOG's server is just broken in only downloading the first 8,388,608 bytes then falsely seeing it as "complete".

Try downloading the 8mb file on your phone. Then open it!!!


Seems like something rotten in Denmark.

Why would we do that? GOG doesn't sell games for phone.

Now we can all wait for the press release announcing the end of offline installers...
(in case you don't get it, that's call sarcasm)

Thank you for looking into this problem. Here is something else I just discovered going over some more games. Metamorphosis and Mad Max both got one 8MB file each, while all other files shows normal file sizes and download as normal. In my case with Mad Max it is Mad Max (Part 9 of 9) and Metamorphosis is Metamorphosis (Part 3 of 4) 1.1.4 my case is emphasized because it has been reported by Cadaver747 they have the issue with a different file (Fallout 3), so this could apply to other files for other games and different customers. The only commonality is the problem as such.

I don't know if it helps but can't hurt to mention that being the case either.

Thank you for replying. If it's of any help, here's a summary to pass onto your tech team:-

- A number of games backup installers have download errors where large .bin files that are supposed to be 1-4GB in size will stop downloading and be incorrectly marked as complete by the web browser after downloading the first 8MB. The abnormally truncated size always seems to be cut short at exactly 8,388,608 bytes.

- The issue was first noticed in Fallout 3 but many other games have been reported by multiple other people.

- Some languages are affected but not others. Eg, the German version of setup_fallout_3_1.7.0.3_(12034)-1.bin (Part 2 of 3) is 4GB as it should be, but the English version is falsely truncated to 8MB.

- Some platforms are affected but not others. Eg, I can download 11.4GB sized soma_1_61_50361.sh.part (SOMA for Linux) fine but 4GB sized setup_soma_1.61_(64bit)_(50360)-1.bin (SOMA Part 2 of 4) for Windows is falsely truncated to 8MB.

- Some games have a mix of working and broken files. Eg, for Deus Ex Human Revolution, I'm seeing parts 2 & 5 are broken (falsely truncated to 8MB) whilst parts 3 & 4 are working.

- Using a different web browser (Firefox vs Chrome) on a clean profile with no browser extensions makes no difference. Neither were recently updated / changed to different versions.

- Files were downloaded to a drive with NTFS file system (so it's not a "can't save +4GB file to FAT32" issue). The drive has hundreds of GB's of free space (enough for the files + temporary versions of them in the browser cache / temp folder).

- Comparing the contents of the first 8,388,608 bytes from a backup of the same files to the faulty 8,388,608 sized broken downloads ones shows them to be identical. So it's possible the full files are there, it's just how they're being served that's been broken.

I just tried both version (spanish and english) and are fine, download normally. Can you try again? Aparently the problem is solved.

I decided to try downloading some too but the speed is the slowest I have seen for a GOG download in a long time if ever.

EDIT: It picked up again to reach what would be normal at this hour for me.

Still broken here, as reported in post #2:-

Fallout 3, Part 2 of 3, English, 4.0GB - setup_fallout_3_1.7.0.3_(12034)-1.bin - is still broken (8MB).
Fallout 3, Part 3 of 3, English, 3.1GB - setup_fallout_3_1.7.0.3_(12034)-2.bin - is still fine (it was earlier too for me).

The Spanish, German, French & Italian versions didn't appear to be broken even earlier on. Other games, eg, Deus Ex HR, SOMA, etc, are still broken as reported in post #4.

Downloading a different language version does not show the same error. It does seem that it is a specific error with the English files only and rather random in nature. Random which file is affected for certain members and not others.

Whatever happened, it must have occurred this morning. I downloaded games last night around 11:45 pm CST and no issues.

Plus, I've been backing up over 650 games for the past two weeks, including 100 or so the past 3 or 4 days and no issues. With that many games, it'd be easy to tell if an issue was occurring.

All this is English language. I've never downloaded other languages.
.

Just retested it, and it's still broken for me:-
https://www.gog.com/upload/forum/2021/10/cc97035d4a21bdd9689366e6679db9f0c87591e3.jpg

Edit: By broken I mean the 4GB setup_fallout_3_1.7.0.3_(12034)-1.bin file is still exactly 8,388,608 bytes in size. I did a summary post earlier to pass onto the tech team if it's of any use in troubleshooting.