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

Fix Windows Defender Error 0x80073b01 (Crash on Startup)

If Windows Defender crashes on startup with error code 0x80073b01, the antivirus service may be f...

How to Stop Command Prompt from Freezing on Startup

If Command Prompt (cmd.exe) freezes or hangs shortly after opening, it's usually due to a startup...

How to Restart the Task Scheduler Service in Windows

If scheduled tasks aren't running or you see errors like "Task Scheduler service is not available...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

How to Handle '404 Not Found' Errors in PowerShell

When you get a '404 Not Found' error in PowerShell while using Invoke-WebRequest or ...

Fix Windows Security Login Loop: Step-by-Step

You sign in to Windows, see the desktop briefly, then get kicked back to the login screen. This l...