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

Fix Windows Defender Update Error 0x80070005

You see error 0x80070005 when trying to update Windows Defender. This usually means a permission ...

How to Fix High Memory Usage by Command Prompt (cmd.exe)

You open Task Manager and see that Command Prompt (cmd.exe) is using 500 MB or more of RAM. That'...

MongoDB Authentication Failed: Administrator Checklist

Fix Windows Security 502 Bad Gateway Error

If you're seeing a "502 Bad Gateway" error when opening Windows Security (also known as Windows D...

How to Fix Windows Activation Error 0xc004c003 After Motherboard Swap

After replacing your motherboard, Windows may show activation error 0xc004c003. This means the ac...

Fix Windows Defender Blank Screen via Registry Edit

If you open Windows Defender Security Center and see only a blank white or gray screen, the inter...