Game is installed on C: drive, under Program Files (x86). Installed using the hard copy from the CD, which automatically installs the GOG client. Like I said, the first time I installed the game there were absolutely no problems; issue started after I uninstalled the DLC's.

Yep, that is working for me, thanks ;)

(i changed the user authorisations for the folders "GOG Games", "The Witcher 3 Wild Hunt" and all the files inside it)

Zainstaluj GOG Galaxy ---> witcher wild hunt --->More--->Configure----->Get backup & extras.
wybierz i zainstaluje co Ci sie podoba.
Miłego.


"Zainstaluj" = Install

"wybierz i zainstaluj co CI sie podoba" - choose and install whatever u like

"Miłego" - "nice" ( from " have a nice day" )

Had the same problem until I assigned installation path to disc C. Seems like GOG likes nothing else but

Good hint.
it has worked - Game is installing now.
Thank you

Hello guys, I had the same problem and fixed it by going in to settings and changing install location there. "Flies away"

Just had a similar thing here, even though I selected install this game to another drive, other than c:\, it seemed to ignore that and attempt to install to c:\ anyway. I only managed to "reset" things by hitting the uninstall option, changing the global preferences to install to my normal games drive H:\ and then installing the game again.

I didn't run a trace or process explorer at the time but I suspect it was trying to install to C:\ as that drive has less space than the game requires even though I had chosen to install to my H:\ drive.

I had the same problem with a different game, C:/ is my OS disk with very little space. Changing installation disk through the install menu doesn't seem to do anything. Went to settings as suggested above (ty ^^) and changed it to D:/, works perfect now.