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

Fix Docker Build 'exec format error' for ARM64 Images

When building a Docker image for ARM64 (e.g., on Apple Silicon or AWS Graviton), you may see an e...

Fix PowerShell Auto-Start 'Permission Denied' Error

You set a PowerShell script to run automatically at startup, but instead of running, you see a 'P...

Windows Defender Service Not Starting: Fixes and Checks

When Windows Defender won't start, you might see an error like "Windows Defender service can't be...

BitLocker Troubleshooting: Fix 'Permission Denied' Errors

When BitLocker reports 'Access denied' or 'Permission denied' even with correct credentials, the ...

How to Fix Abnormal Memory Usage in CMD on Windows

Fix Task Scheduler Proxy Authentication Failed Error

When a scheduled task fails with a 'proxy authentication failed' error, it usually means the task...