Fix PowerShell 502 Bad Gateway After Windows Update - Troubleshoot OneDrive Sync Service Unavailable: Setup Steps-Fix OneDrive Stuck on Sync Pending for Long File Names

Updated 2026-06-13 21:02:52cloud-software
Fix PowerShell 502 Bad Gateway After Windows Update - Troubleshoot OneDrive Sync Service Unavailable: Setup Steps-Fix OneDrive Stuck on Sync Pending for Long File Names
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.