Fix Windows Security App Blocked by Antivirus
You open Windows Security (formerly Windows Defender) only to see an error or blank screen becaus...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix DNS Probe Finished NXDOMAIN on Custom DNS Server
If you see “DNS PROBE FINISHED NXDOMAIN” in Chrome or another browser while using a custom DNS se...
Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Fix Firefox Secure Connection Failed Error Due to Antivirus
You try to visit a website in Firefox and see a message like “Secure Connection Failed” or “PR_CO...
Docker Container Exits Immediately: How to Find Logs and Fix It
You start a Docker container and it stops within seconds. The status shows "Exited (0)" o...
Fix 'Externally Managed Environment' Error on Linux
If you're on a modern Linux distribution (Ubuntu 23.04+, Debian 12+, Fedora 38+, etc.) and ge...
Issue queue
SitemapHow to Fix Git Push Rejected Non Fast Forward
Fix 0x80070002 Error by Resetting Windows Update Components
Chrome Keeps Crashing on Startup? Fix the Loop
How to Resolve Docker Build Timeout Errors
Fix Git Push Rejected Non Fast Forward Branch Error
How to Fix Windows Defender Permission Denied Error
Fix Python Requests Timeout Error
How to Resolve Unusable Breakpoints in Visual Studio Code
Node.js OOM When Parsing JSON: Solutions and Workarounds
Non Fast Forward Error Troubleshooting
Fix pnpm install ETIMEDOUT Errors: Network & Config Checks
Fix Node.js Heap Out of Memory in Docker Containers
Fix 0x80070002 Error by Resetting Windows Update Components
Chrome Keeps Crashing on Startup? Fix the Loop
How to Resolve Docker Build Timeout Errors
Fix Git Push Rejected Non Fast Forward Branch Error
How to Fix Windows Defender Permission Denied Error
Fix Python Requests Timeout Error
How to Resolve Unusable Breakpoints in Visual Studio Code
Node.js OOM When Parsing JSON: Solutions and Workarounds
Non Fast Forward Error Troubleshooting
Fix pnpm install ETIMEDOUT Errors: Network & Config Checks
Fix Node.js Heap Out of Memory in Docker Containers