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

Fix Windows Security 404 Not Found Permissions Issue

You open Windows Security and see a 404 Not Found error, or the app won't load at all. Often this...

How to Fix Chrome Profile Error: Unable to Open

If Chrome shows an error saying it's unable to open your profile, you can't access bookmarks, his...

Command Prompt Port Allocation Troubleshooting Checklist

When a service or application fails to start with a message like "port already in use" or "addres...

How to Fix Windows Defender File Locked Error 0x80070020

Error 0x80070020 often appears when Windows Defender (Microsoft Defender Antivirus) is scanning a...

How to Fix Command Prompt Not Opening in Windows 10

If you click the Command Prompt shortcut and nothing happens, or it flashes and closes, you're no...

Outlook Authentication Failed: Checklist to Verify Credentials