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 notesHow to Fix Windows Defender File Locked Error 0x80070020
Error 0x80070020 often appears when Windows Defender (Microsoft Defender Antivirus) is scanning a...
Windows Activation SSL Certificate Error Checklist
When you see an SSL certificate error during Windows activation—typically a message like "An ...
Fix 'Windows Activation Script Not Working Command Not Found' Error
When you run a Windows activation script (typically a .bat or .ps1 file) and see 'command not fou...
Fix Remote Desktop High Memory Usage & Slow Connections
When Remote Desktop runs slowly or uses excessive memory, it often points to configuration issues...
Fix Network Error 0x80070035 in Command Prompt
When you try to access a shared folder or network drive using command prompt and get error 0x8007...
Issue queue
SitemapWindows Terminal Troubleshooting: Command Not Found
Teams Auto-Start Broken After Update: Fix
Outlook Update Error 'Cannot Start' – How to Fix
Troubleshoot Windows Defender Not Starting
Microsoft Teams Update Stuck at Downloading: How to Fix
Resolve 504 Gateway Timeout in Scheduled Tasks
How to Run Microsoft Outlook on Ubuntu
Microsoft Teams Invalid Configuration: Troubleshooting Checklist
Antivirus Blocking Windows Update Service
OneDrive Startup Sync Issues Checklist
Chrome Profile Cannot Connect to Internet: Fix Guide
How to Fix Windows Search Error 0x80040c
Teams Auto-Start Broken After Update: Fix
Outlook Update Error 'Cannot Start' – How to Fix
Troubleshoot Windows Defender Not Starting
Microsoft Teams Update Stuck at Downloading: How to Fix
Resolve 504 Gateway Timeout in Scheduled Tasks
How to Run Microsoft Outlook on Ubuntu
Microsoft Teams Invalid Configuration: Troubleshooting Checklist
Antivirus Blocking Windows Update Service
OneDrive Startup Sync Issues Checklist
Chrome Profile Cannot Connect to Internet: Fix Guide
How to Fix Windows Search Error 0x80040c