Posted October 24, 2016

List of previous solutions:
re-installing the Visual C++ 2012 Redistributable
installing Galaxy to C:\Program Files(x86)\GalaxyClient
make sure that "X:\ProgramData\GOG.com" is on the same drive as the installation directory
execute "sc delete GalaxyCommunication" and "sc delete GalaxyClientService" in the Windows console, launch Galaxy
uninstall, execute "sc delete GalaxyCommunication" and "sc delete GalaxyClientService" in the Windows console, re-in stall
In my case, this is the first time I install Galaxy on this computer and I only have one hard drive where everything is located. Also, the services are correctly removed when uninstalling.
Full error: "Essentail components needed to start GOG Galaxy are missing. Please reinstall the application."
This could be a problem with either of the services (Galaxy Client Service or Galaxy Communication). After a fresh install - what happens when you run "sc start GalaxyCommunication" and "sc start GalaxyClientService" in the terminal?
Also - could you attach your log files, from C:\ProgramData\GOG.com\Logs? They would help.
Liosan