And another E9...
I'm starting to think I should refund my preorders and spend my money on more fiable platforms
Which is sad since I bought games from them since the begining

Same was happening to me until today, an update has happened hopefully its fixed

Update: nope! same thing

Test

downloading cyberpunk with constant E9 error, took me 2 days to go to 47% another day for 80% and now im back at 47%

made me realize how much I love Steam

Downloading Cyberpunk 2077. GalaxyClient has received 29.84 GB of data but only 11 GB has been successfully downloaded. Constant E9 errors. Last E9 error took me from 19 GB back to 11 GB. Frustrating with 1.3 Mbps internet speed.

I've been downloading Cyberpunk 2077 for the past 2 and a half hours on the Galaxy desktop app. I'm only at 26%, thanks to the download/installation failing every 5 minutes or so. Because of that I have to babysit the app to retry.

I've also lost connection to the online of the app and had to exit the app and re-open it 3 times.

I'm having the same issue, download got to 18GB and then got E9, I retried it several times manually and whilst it insisted it was still downloading it never went over 18GB after 3 hours. No connection faults occured, makes me wonder if it's a corrupted file more than anything else.

My understanding is you can only resume the download manually, it will not automatically check and resume. That is toxic.

Only reason I bought on gog was to support the dev, but this is a really poor experience. I now see people have been complaining about no automatic resume for months, that's really disheartening and doesn't make me want to use the service again.

Edit: Since the issue kept occuring after roughly the same period of time I wondered if it was to do with the file. I found the most recently updated file and moved it to a new folder, the installer seemed to continue downloading fine, although it didn't download the file again, I tried putting it back in but ended up with the E9 error again. After I removed the file and had the launcher verify the installation again it finally downloaded the rest, though still very very slowly.

Despite it claiming to be downloading at a certain speed, which process manager confirmed with its network use, it completed the download far slower than it should have done (final 5GB took 4 times as it should have according to the download speed).

Same issue here (GOG Galaxy is even updated to 2.0.30 HF from December 10, 2020) when trying to install Cyberpunk 2077 (also having this issue on Baldur's Gate 3 (Early Access), on both Windows 10 (2004) and OS X (one still on 10.x the other on 11.x)). My Internet is extremely slow and high latency (satellite ISP), but the Internet is designed for having unreliable and inconsistent connections (at least when using TCP+IP). I don't have such problems on Steam with the same ISP.

When I click "Retry", the client seems to do nothing. No indicator of retrying, no indicator that it's failed. Implementing the "rsync" tool must be really hard to do. :rolling_eyes: I *really* want to keep supporting GOG, but you guys *really* need to get your act together and stop spending time on "sync integrations" and stupid shit like that and just get your launcher to work for getting me my games and keeping them up-to-date. That's all I really want from you.

Seems like this issue is at least a year old from a quick search (e.g. www.reddit.com/r/gog/comments/e9jz1p/trying_to_download_purchases_from_the_store/ ).

EDIT: Eventually it did indeed retry, but then failed anyways. Could the GUI give some kind of feedback as to its progress or what it's trying to do and when it's doing it? If you need a great example, look no further than Steam. :)

I might be wrong here but it really feels like E9 appears when you are downloading and an update happens. (That and the odd server is saturated on launch days)
It generally mess my download and no amount of retry seems to do the trick. My only option was to uninstall a re-launch the download from scratch (which was bad because I download at 300ko/s when the connection is good)

However, while I lost a lot of time because I'm downloading mostly at night, I found a way to at least keep most of my downloads when retry doesn't work

- Go in the download folder.
- Rename the game's folder (for exemple cyberpunk2077 ==> cyberpunk2077e . The name doesn't really matter).
- Go in galaxy and uninstall the game. It will throw an error, which is normal since the folder doesn't exist.
- Now the install button is clickable again, so click it
- When you are at the screen where you select the installation's location, select the place where the game was previously but Don't start the download
- Go in the download folder and rename the game folder to what it should be: cyberpunk2077e ==> cyberpunk2077
- Start the download.

The game should read the file and what was downloaded but it should work. You might loose a few go in the process but at least you won't loose everything.
I noted that sometime when the download is marked as done you must check the file, it download a bit more (for cyberpunk it was 20 gigs!) and then you can play.

I agree it's not ideal but I wouldn't be playing the game if not for this workaround.

In my opinion the reason we lose some of the files we downloaded (It actually used to happen to steam at some point), is that sometime a partially downloaded file that is corrupted or do not match what's on the download server, it's simply deleted and redownloaded.
And since most game engines are big fan of packing assets in big bloated archives, that means it redownload a chunk of the game each time.

Now I'm not cdpr or gog so those are speculations.

This! This just saved me from having to spend days re-downloading 12g (lost 1g of downloaded files, but that's 12 times better than losing it all! ;) I have a very slow Internet, which is why I play single-player games like Cyberpunk 2077 and Baldur's Gate 3)! My update had "failed" (yet again) and no amount of clicking "Retry" would get it to do anything, so I quit GOG and started it back up, hoping it'd resume from where it left off. Instead, GOG completely forgot that it was trying to install Cyberpunk 2077 in the Downloads section, but in the game Owned Games section "Install" was greyed out and I could only "Uninstall".

same here, very disappointing

Galaxy decides to lock up and quit at some random point while trying to install (or update) Cyberpunk 2077, I don't even know what it's trying to do anymore, after I gave it a few days off from downloading. Been trying since last night again, and after another bout of app lockups and quits, then unable to be re-opened, I've just uninstalled Galaxy, again. Frustrating as hell. Been telling friends to just pick it up in late January or February when these issues are hopefully ironed out, even a little bit.

Yeah I posted an other post here after downloading the separate files, and all corrupted. 5 times...

And still nothing back from gog.com them selfs....

it's getting annoying and frustrating fast, seeing it was the most expensive on this place, and I can't even download/install it...

I had luck killing the GOG process entirely and relaunching it. Might have been luck of the draw on time of day perhaps (9 PM) but seems to have resolved the constant E9 error I was getting a moment ago when trying to update Cyberpunk 2077.