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

Fix VirtualBox Kernel Driver Permission Denied on Linux

Fix Windows Activation Blocked by Proxy Server

If Windows activation fails with an error like “We can’t activate Windows on this device because ...

Fix PowerShell Invalid Configuration After Update

After a Windows or PowerShell update, you may see errors like “Invalid configuration” or “Configu...

Resolve 502 Bad Gateway Using Command Line Tools

A 502 Bad Gateway error means a server acting as a gateway or proxy received an invalid response ...

How to Disable Command Prompt High CPU Usage from Startup Services

If you notice that Command Prompt (cmd.exe) is consuming a lot of CPU right after boot, it's ofte...

How to Fix Windows Security Log Not Writing Events

You open Event Viewer, navigate to Windows Logs > Security, and see nothing recent—or nothing at ...