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

Fix VirtualBox Kernel Driver Permission Denied on Linux

Fix 504 Gateway Timeout After Windows Update

After installing a recent Windows update, you might see a 504 Gateway Timeout error when browsing...

How to Reset Windows Defender Settings to Default

If Windows Defender isn't behaving as expected—real-time protection won't turn on, settings are g...

Fix PowerShell Service Unavailable Error During SFC Scan

You try to run sfc /scannow in PowerShell and get an error like "Service unavailable...

Command Prompt Setup Guide for Beginners

What is Command Prompt?

Command Prompt is a text-based interface in Windows that lets you...

Command Prompt Service Unavailable: Troubleshooting Checklist

When you open Command Prompt and see 'Service unavailable' or 'The requested service is not avail...