Fix Microsoft Store Proxy Error 0x80131500 - Chrome Sync Not Working After Startup-Fix OneDrive Sync Port Already Allocated Error Code

Updated 2026-06-18 10:05:02macos-help

Fix Microsoft Store Proxy Error 0x80131500 - Chrome Sync Not Working After Startup-Fix OneDrive Sync Port Already Allocated Error Code

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.