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

Fix Windows Update Error 0x80070020: File Locked

You try to install Windows updates but get error 0x80070020. This usually means another program o...

Setup Environment Variables to Fix Command Not Found

You type a command you know is installed, but the shell replies: command not found. ...

How to Configure Windows Search to Exclude Specific Folders

If Windows Search returns results from folders you'd rather keep out of its index—like backups, t...

How to Fix systemd Service Restarting Repeatedly Error

How to Unlock an Outlook File Locked After Crash Recovery

After an unexpected crash, Outlook may refuse to open your PST or OST file, showing a message tha...

Setup OneDrive to Ignore SSL Certificate Errors

If you're using OneDrive with a corporate proxy or internal server that uses a self-signed or exp...