How to Fix Rust Cargo Build Failed with Exit Code 101 - Fix Port Already Allocated Error in Microsoft Store on Windows 10-How to Restore Windows Defender After an Update

Updated 2026-06-13 14:54:07developer-tools

How to Fix Rust Cargo Build Failed with Exit Code 101 - Fix Port Already Allocated Error in Microsoft Store on Windows 10-How to Restore Windows Defender After an Update

Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

Restart the affected app after changing permissions or configuration files.
Test the same workflow in a clean browser profile or a temporary user account.
Compare the result on another network if the error may be connection related.