Edit: Issue appears to be resolved since latest configuration update: https://itch.io/post/8930145

We’ve noticed a significant number of reports regarding corrupted downloads, particularly for larger files from itch.io.

On 2023-11-21 we completed full migration to a new CDN after a gradual roll-out during the week. We didn’t receive any reports during this period, but we have now started seeing your reports coming in. To assist us in diagnosing the issue, please respond to this thread if you are experiencing the problem, providing details for each point below:

1. Link to the affected game page
2. Size of the file and filename you’re attempting to download
3. Was the file recently uploaded? (If so, when?)
4. Was the file uploaded using Butler? (This is only relevant for page owners)
5. Your geographical location (if you’re comfortable sharing)
6. A brief summary of the issue - does the download cut out? Slow down? etc.
7. Are you downloading via the app or through your browser?

Note: There is no need to re-upload files. This is a delivery-related service issue. The files you’ve previously uploaded are securely stored in our primary storage, and we have no reason to believe there are any issues with them.

Thank you for your patience. We hope to have a solution ready soon.

Thanks for the reports everyone. We had a call with the CDN and where able to identify the issue and push out a hotfix. We’re still testing but everything appears to be functioning as intended on our end. If you are still experiencing issues please reply to this thread.

Edit: We are still getting reports, so we’re continuing to investigate
Edit: We are considering the issue fully resolved since this latest update: https://itch.io/post/8930145

1- https://kagetodev.itch.io/special-harem-class-v0-2-4.
2- 701mb
3- Yes, last week.
4 - No, it was on web
5 - 
6 - It starts, but very quickly goes back to a low speed, close to 8mb/s. It "completes" when it reaches around 460mb, but the file downloaded is corrupted (unexpected end of file)
7 - Browser

1. https://thestarknight.itch.io/the-starknight-extended-demo  but it happens on my other projects page too
2. Size of file: 342 Mb
3. I pushed a release two days ago, but the download was fine back then, the new ones i pushed today, after the problem appeared, all fails.
4. Was the file uploading using butler? Yes butler, but i did a test uploading the same zip from the browser and the problem showed for that one too.
5. Europe
6. Summary: Simply it stops downloading, signaling the file is completed, but is not. I noticed it happens often at the same size, like for 340 mb at 220 mb or so. I tryed to push fresh builds, push on new channels, upload from the browser, nothing works. Oh, if you download a backup copy from the "Edit Game" page, that one works. The alternate download seems fine too  according to other users but for No Payment games the option is not shown.
7. Browser, I tryed Firefox and Chrome and they both give the error.

1. https://hypernoire.itch.io/danils-mod
2. 849mb
3. Now
4. Not Butler
5. Russia
6. After downloading the file weighs 487mb
7. Google Chrome

There is a suspicion that the file is saved with the wrong length because it is downloaded completely but is no longer saved to disk correctly. The exe file is complete but there is no data at the end. That is, the whole problem is not on the server, but in the process of saving in the metadata sent from the server.

1. Link to the affected game page: https://skyward-gamess.itch.io/the-faceless-man
2. Size of the file you’re attempting to download: 3GB
3. Was the file recently uploaded? (If so, when?): 4 days ago
4. Was the file uploaded using Butler? (This is only relevant for page owners): Yes
5. Your geographical location (if you’re comfortable sharing): Brazil
6. A brief summary of the issue - does the download cut out? Slow down? etc.: Users are saying the zip file is corrupted
7. Are you downloading via the app or through your browser?:

cant download full games still stops for no reason any fixes yet or is still being investigated

1. Link to the affected game page
   - https://zanithone.itch.io/a-house-in-the-rift (18+ game, just in case)
2. Size of the file you’re attempting to download
   - 7Gb
3. Was the file recently uploaded? (If so, when?)
   - October 29th
4. Was the file uploaded using Butler? (This is only relevant for page owners)
   - Yes
5. Your geographical location (if you’re comfortable sharing)
   - Multiple, we are receiving reports from our users, and I myself experience the issue
6. A brief summary of the issue - does the download cut out? Slow down? etc.
   - We've mostly receiving reports of corrupted downloads  - the download shows a completed, but the file is only partially downloaded. This is the same for me, the download reports as complete at 4.6Gb.
7. Are you downloading via the app or through your browser?
   - We're receiving reports about downloads from the website and via the app both.

https://mister-rooster.itch.io/wartribe-academy

4 GB only get 1.8-3.2GB

Slows down after 2GB (14MB/s to 2MB/s)

breaks off without an error

Files were recently uploaded by author

Please fix this issue!

Faced this issue yesterday and also just now. 

 1 - https://retroarchofficial.itch.io/retroarch 

 2 - Multiple files, from 150mb to 250 mb 

 3 - Uploaded May 2023 

 5 - South Asia

 6 - Downloads fine, but files are corrupt. I checked the 7zip files in an editor, the file starts with the correct header and has binary data. Same with zip files. 

 7 - Through regular vanilla browser downloads.

1. https://preggopixels.itch.io/seeds-of-destiny
2.  1.3 GB
3. No; uploaded March 29th, 2023
4.
5. USA
6. Download stops early; "Download complete" despite stopping at less than 300mb
7. Browser

https://naughtyroad.itch.io/light-of-my-life
Download using the browser (Chrome).
All three available downloads (pc/linux, Mac, Android) fail, file size ~8 GB for the first two, ~2GB for the last.

The failure is that the download breaks somewhere halfway through, and the message in chrome is "failure - forbidden". There are no corrupted files, it just aborts the download.

This is my own game page, but also reported by some of my customers (which is why I went on and gave it a spin).
Edit, just noticed the question list, adding: 

1. Link to the affected game page https://naughtyroad.itch.io/light-of-my-life
2. Size of the file you’re attempting to download: varies, between 2GB and 8 GB
3. Was the file recently uploaded? (If so, when?): 67 days ago.
4. Was the file uploaded using Butler? (This is only relevant for page owners): Yes
5. Your geographical location (if you’re comfortable sharing): Netherlands
6. A brief summary of the issue - does the download cut out? Slow down? etc.: The failure is that the download breaks somewhere halfway through, and the message in chrome is "failure - forbidden". There are no corrupted files, it just aborts the download.
7. Are you downloading via the app or through your browser? Browser (Chrome).

1- it actually happens with any game I try

2- from 300 to 2gb

3- most are some months old

4-.

5- Argentina

6- it gets prohibited

7- through my browser in my phone

Got two reports from players having trouble downloading one of my games. One was reported today just a few hours ago, the two days ago or so.

1. https://labchurros.itch.io/undergroundcathedral
2.  2gb
3. One or two months ago
4. No Butler
5. Don't know
6. They say it was cutting off. One reported being able to download it only after getting a download manager.
7. One of them was through the browser the other I don't know.

1. https://killahseven.itch.io/my-new-family
2. 2.9Gb
3. 3 days ago
4.
5. France
6. download seems to work fine up to 1.2Gb, then my browser says it's done all of a sudden, when it's not even half way through. Of course the supposed compressed archive i should have is not complete so it is not recognised as a valid compressed archive.
7. DDL through browser on a PC

But yeah, as Strehnx said, pretty much all dowload from your site have been failing for a couple days. Not literally all of them, but most of those i tried. The one i mentionned is just the last one i tried. I thought it was a problem on my side and spent hours trying to fix it. Good luck fixing it.

still getting reports of this for both Mac and PC versions of (NSFW) https://altosandherdone.itch.io/the-headmaster
6GB each, uploaded via butler 9-Jun-2023 (not by me)
reports of downloads appearing to complete but massively truncated (2GB or less) via browser as recently as today, one France, one US