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

Fix 'File Locked' or 'Permission Denied' During Windows Update

You try to install a Windows update, but it fails with a message like "File locked" or <...

Fix Microsoft Teams Microphone Not Working in Meeting

If your microphone stops working during a Teams meeting, it's often a quick settings or permissio...

Fix Microsoft Teams Modern Authentication Failure

When Microsoft Teams shows 'We couldn't sign you in' or 'unable to authenticate with modern authe...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

How to Enable Windows Defender via Command Prompt

If Windows Defender is disabled on your system—often due to group policy, third-party antivirus, ...

Fix PowerShell Service Unavailable Error on Windows

You're running a PowerShell command and get a red error: "Service unavailable". ...