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

Fix Windows Defender Blank Screen After Update

After a recent Windows update, you may open Windows Security (Windows Defender) and see a blank w...

Fix Windows Defender Error 0x800704ec

You see error 0x800704ec when opening Windows Defender or Windows Security. The message says auth...

Fix 'Windows Security Error: Virus Protection Turned Off'

You open Windows Security and see a red banner: “Virus & threat protection turned off.” This can ...

Fix Windows Update High CPU Usage with Permission Denied Errors