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

Fix Windows Activation Key Not Recognized Error

You enter your Windows product key during installation or activation, and get an error that the k...

How to Clear SSH Known Hosts and Fix Host Key Verification Failed

Fix Windows Terminal settings.json Not Working

You edit the settings.json file in Windows Terminal, save it, and expect the changes to apply imm...

Fix Windows Defender Blank Screen in Safe Mode

You boot into Safe Mode to run a malware scan, but Windows Defender shows nothing—just a blank wh...

Fix Chrome Profile File Locked After Crash

If Chrome crashes and you see a message that your profile file is locked, it usually means Chrome...

How to Fix Command Prompt Using Too Much Memory

Command Prompt (cmd.exe) normally uses very little memory—often under 10 MB. If you see it consum...