Yes I know I should contact support wich I will but think it´s been new years and all that I bet support will be slow for a while which is understandable.

So I ask here in hope of a solution. So trying to install Heroes of might and magic it gets to 97% then it fails with Error Install Failed (E2) Failed to install finalize instaltation.

So I tried to do it manually which and then go in to gog galaxy then go manage installations and import folder. Then it says updating and get to 97% and fails again to finalize the import.

So I wonder what the problem is and what does (E2) stand fore hmm

I have the same issue, but with Heroes of Might and Magic III Complete. Either OP meant that, it is a general bug, or it is a bug with the Heroes series.


So I download the installer from the GOG website now and hope that works. Galaxy should automatically recognize the installation then.

Having the same error, but finding that it doesn't happen when I put the games on C.
It does it when I install the game on F, my external SSD.
All the files download, the game works, but it doesn't properly finish so it doesn't show up in Galaxy.

Yeah it´s strange it also happend with 2 other games but it´s like out of 50 games 3 games is like can not finish instaling.

Same Problem here with Witcher 3... :-(

I'm having an E2 problem with X4. I try to validate an install from the offline installers and run into "Update failed (E2): Failed to finalize the update."

Same thing for me, also for Monkey Island 2! I went into GOG Galaxy's game folders though and it *seemed* to all be intact, I even ran the exe for monkey island 2 and it booted correctly. I also tried deleting the game files and retrying the installation, but it stopped around 97% again and gave the same exact error message mentioned in this thread.

Super weird! I guess I'll just run it "offline" as needed unless anyone here finds a solution