Knowledge base for software setup, errors, and daily tool work.

Windows Activation Cache: Location and How to Delete

If you're getting activation errors after a hardware change or a Windows update, a corrupted acti...

Fix Windows Activation Module Not Found Error 0x8007007b

When you see "Windows activation module not found" with error code 0x8007007b, Windows cannot loc...

Fix Microsoft Teams Screen Sharing Not Working on Mac

You’re in a meeting, click the share button, and nothing happens—or the screen goes black. Screen...

Fix Windows Security Reset Settings Not Working

If you've tried to reset Windows Security settings to default and the option doesn't respond, you...

Fix 'Windows Security Authentication Failed' for Domain Credentials

Fix Putty Connection Refused on Port 22

You try to connect to a remote server with Putty on port 22, but you get 'Connection refused'. Th...