Fix OneDrive Sync Connection Refused Error - Chrome Blank White Screen on Startup Fix-Command Line Diagnosis for 502 Bad Gateway

Updated 2026-06-14 01:25:46cloud-software
Fix OneDrive Sync Connection Refused Error - Chrome Blank White Screen on Startup Fix-Command Line Diagnosis for 502 Bad Gateway
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.