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

How to Troubleshoot PowerShell 404 Not Found Errors

When PowerShell shows a 404 Not Found error, it usually means the system cannot locate a file, mo...

Windows Security App Not Opening After Update: Fixes

After a Windows update, the Security app may refuse to open—clicking the icon does nothing, or it...

How to Fix BitLocker Connection Refused Setup Error

You're setting up BitLocker and get a 'connection refused' error. This usually happens during net...

How to Fix BitLocker Module Not Found or Permission Denied Errors

How to Fix Windows Defender Not Starting Automatically

If Windows Defender (Microsoft Defender Antivirus) isn't starting automatically when you boot you...

Task Scheduler 502 Bad Gateway: Troubleshooting Checklist

If you see a 502 Bad Gateway error when a scheduled task runs, it usually means the task tried to...