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

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Caused by Antivirus

When Chrome shows ERR_TUNNEL_CONNECTION_FAILED, it usually means a secure tunnel...

PowerShell Slow Startup: Common Causes and Fixes

If PowerShell takes noticeably longer to start than usual—sometimes 10 seconds or more—the proble...

Fix Windows Defender 'Cannot Connect, Permission Denied' Error

When you see 'Cannot connect, permission denied' in Windows Defender Security Center, it usually ...

How to Fix Abnormal Memory Usage in CMD on Windows

Fix Windows Terminal Proxy Error 407: Step-by-Step Guide

If you see error 407 in Windows Terminal, it usually means proxy authentication failed. This arti...

Fix Azure CLI Token Expired in Windows Terminal

If you see an error like Azure CLI token is expired when running commands in Windows...