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

Fix Windows Security Access Denied When Opening Settings

You click Windows Security in the Start menu or try to open Virus & threat protection, and instea...

Enable Windows Security Manually When It Fails to Start

If Windows Security (formerly Windows Defender) fails to start, you may see an error like "This a...

Fix Command Prompt Auto Start Not Working in Windows 11

You set Command Prompt to run automatically via Startup folder, Task Scheduler, or Registry – but...

How to Fix Node Version Mismatch in npm install

You run npm install and get an error about an unsupported Node.js version. The packa...

Fix Outlook Email Sync Failed on Ubuntu

Outlook email sync fails on Ubuntu: what to check

If Outlook (via web browser, Evolution,...

Fix Windows Defender 502 Bad Gateway: Tool Usage Tips

When Windows Defender returns a 502 Bad Gateway error, it usually means the security intelligence...