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

Windows Defender 404 Not Found: How to Fix Missing Interface

You open Windows Security, click on Virus & threat protection, and get a blank page or a 404 erro...

Fix PowerShell Authentication Failed Credentials Error

Windows Security Backup Sync Not Working? Fixes to Try

If your Windows Security backup isn't syncing, you might see a message like "Backup sync pending"...

Fix Windows Search 'Token Expired' Error in Office 365

You search for a file or email in Windows, and instead of results you see a message like 'Token e...

How to Fix PowerShell Blank Screen Not Responding

When you open PowerShell and see nothing but a blank, unresponsive window, you can't run commands...

Fix PowerShell Service Unavailable Error During SFC Scan

You try to run sfc /scannow in PowerShell and get an error like "Service unavailable...