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

Fix Windows Security Not Starting Due to Third-Party Antivirus

If Windows Security (formerly Windows Defender) refuses to start or shows a blank screen, a third...

How to Fix Chrome Authentication Failed Due to Proxy Settings

If you see 'authentication failed' in Chrome when trying to access a website, your proxy settings...

Fix Docker Compose Build --no-cache Permission Denied

Running docker compose build --no-cache and hitting a "permission denied" error is c...

Fix OneDrive Sync Error 0x8004de40 on Ubuntu

If you see error 0x8004de40 when syncing OneDrive on Ubuntu, the sync client usually fails to aut...

OneDrive Invalid Configuration Sync Issue Fix

Understanding the Problem

You open OneDrive and see an error like "Invalid configuration"...

Fix Windows Security Antivirus Not Turning On

You open Windows Security and see that the antivirus is off, with no obvious way to turn it on. T...