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

Rate Limit Error in Command Prompt: Common Causes and Fixes

If you're seeing a rate limit error while using Command Prompt, it usually means you've made too ...

Windows Security App Not Opening After Update: Fixes

After a Windows update, the Security app may refuse to open—clicking the icon does nothing, or it...

Fix Microsoft Teams Not Detecting External Webcam

You plug in your external webcam, open Microsoft Teams, and the video feed stays black or shows t...

Fix Command Prompt Can't Connect to SQL Server

If you're seeing errors like 'Cannot open server 'hostname' requested by the login' or <...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

Fix OBS Black Screen but Audio Works: Step-by-Step Guide

If OBS Studio shows a black screen in your source preview or stream but audio is working fine, yo...