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

How to Open Command Prompt on Mac: Terminal & Alternatives

If you're coming from Windows, you might be looking for "Command Prompt" on your Mac. The equival...

How to Fix Windows Security Log 'Permission Denied' Error

When you try to open the Windows Security Log in Event Viewer and get 'Permission Denied' or 'Acc...

Fix Remote Desktop Module Not Found Error Easily

When you see 'remote desktop module not found' while trying to connect, the RDP service or its co...

Fix Windows Security Authentication Error 0x80070035

Fix Windows Activation Error 0x8007007b on Ubuntu

If you see Windows activation error 0x8007007b while using Ubuntu (for example, in a dual-boot se...

UFW Deny Port But Still Accessible: Fixes and Checks

You set a UFW deny rule for a specific port, but the port remains accessible from outside. This i...