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

How to Enable Windows Security Real-Time Protection

If you see a warning that real-time protection is off, or you suspect your PC is vulnerable, here...

Fix Windows Update Error 0x80070020: Port Already Allocated

When you see error 0x80070020 during a Windows Update, it usually means a program is already usin...

Fix Windows Defender Update Fails with Connection Timeout Error

You open Windows Security, click to update virus definitions, and after a long pause see "Connect...

Fix Windows Terminal Error 0x80070002 at Startup

If Windows Terminal fails to start and shows error code 0x80070002, it usually means the system c...

How to Install Windows Defender on Ubuntu: Workarounds

Windows Defender is a Microsoft product designed for Windows. It does not have an official Linux ...

Fix Windows Defender Proxy Error: Permission Denied