Before diving into the solutions, it helps to understand why this error happens. Error 6 is almost always a .
Error 6 often means the registry keys ( .reg files) provided by SolidSquad failed to inject into the Windows Registry. Go to your SolidSquad folder.
Open the and go to System and Security > Windows Defender Firewall .
Scroll down to and click Add or remove exclusions . Click Add an exclusion and select Folder .