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

How to Fix Windows Security Backup Not Working

Windows Security backup (part of Windows Backup or File History) may stop working for several rea...

Fix Module Not Found Error in Command Prompt

If you're seeing 'module not found' in Command Prompt, it usually means the system can't locate t...

How to Repair a Corrupted Windows Security Log

If you see errors like "The security log is corrupted" or Event ID 1104 in the System log, Window...

BitLocker Recovery Key Not Accepted: 504 Error Fix

You enter your BitLocker recovery key, but get a 504 error. The key is not accepted. This usually...

Fixing PowerShell Token Expired Errors When Connecting to Azure

When you run a PowerShell command to connect to Azure—like Connect-AzAccount—you mig...

Windows Update High CPU Usage Troubleshooting Checklist