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

Fix Windows Update 404 Not Found Error on Windows 10

When you run Windows Update and get a "404 Not Found" error, it usually means the update server c...

How to Fix Outlook Rate Limit Error in Office 365

Understanding the Error

You may see a message like "Too many requests" or "Server busy" ...

Fix Windows Update Blank Screen with No Cursor

You install a Windows update, reboot, and instead of the login screen you see a blank display wit...

How to Enable Windows Defender Service Manually

If Windows Defender won't start or you see warnings that it's turned off, the underlying service ...

Fix Windows Search Authentication Failed After Password Change

After changing your Windows password, you may see an error like “Windows Search authentication fa...

Fix Windows Defender Firewall Blocking Internet Access

If your internet stops working after a Windows update or security change, Windows Defender Firewa...