Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Proxy Error
When Chrome shows ERR_TUNNEL_CONNECTION_FAILED, it usually means a proxy connect...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix 'Service Unavailable' for PowerShell on Windows 10
You open PowerShell on Windows 10 and see an error like "Service Unavailable" or "PowerShell is n...
Fix OBS Black Screen with Elgato Capture Card
If you're seeing a black screen in OBS when you add your Elgato capture card as a source, you're ...
Slow Windows Activation After Upgrade: Practical Fixes
After upgrading Windows, you may notice that activation takes unusually long—sometimes several mi...
Remote Desktop Troubleshooting Checklist for Windows
Remote Desktop (RDP) is a reliable tool—until it isn't. When you can't connect, the problem often...
How to Clear Cache Using Command Prompt in Windows 11
If Windows 11 feels sluggish or apps behave oddly, clearing cached files can help. The Command Pr...
Issue queue
SitemapWindows 10/11 Update Error 0x80070005 Troubleshooting
Fix Windows Defender Error 0x80070643 – Version Mismatch
Locate PowerShell Log Files on Windows 10/11
How to Set Up UFW Rules for a Specific IP
Check If Your Windows License Is Retail or OEM
Step-by-Step Remote Desktop Setup Guide for Windows 10
Windows Activation SSL Certificate Error: Permanent Fix Guide
How to Clear Chrome DNS Cache After Changing Networks
Troubleshooting Cloudflare Full Strict SSL Problems
Resolve Chrome 502 Bad Gateway
How to Fix Permission Denied in Windows 10 Activation
Java JDK Not Recognized After Install: Quick Fix Guide
Fix Windows Defender Error 0x80070643 – Version Mismatch
Locate PowerShell Log Files on Windows 10/11
How to Set Up UFW Rules for a Specific IP
Check If Your Windows License Is Retail or OEM
Step-by-Step Remote Desktop Setup Guide for Windows 10
Windows Activation SSL Certificate Error: Permanent Fix Guide
How to Clear Chrome DNS Cache After Changing Networks
Troubleshooting Cloudflare Full Strict SSL Problems
Resolve Chrome 502 Bad Gateway
How to Fix Permission Denied in Windows 10 Activation
Java JDK Not Recognized After Install: Quick Fix Guide