Is this the first time you install spacedesk?
Or do you already have an older version of spacedesk Driver on your primary machine?
For further analysis, could you please send us the following:
– run dxdiag.exe on your primary machine, click “Save all information” and send us the output file
– spacedeskSetup.log file located in C:\Users\Public
– setupapi.dev.log file located in C:\Windows\INF
Please save all requested files in one folder, then right-click -> Send to -> Compressed (zipped) folder, then attach the *.zip file on your next reply.