How to Fix 'Port Already Allocated' for Windows Update Service - How to Troubleshoot Cloudflare Error 522-OneDrive Files On-Demand Not Downloading: Fix Guide

Updated 2026-06-16 00:32:22office-tools
How to Fix 'Port Already Allocated' for Windows Update Service - How to Troubleshoot Cloudflare Error 522-OneDrive Files On-Demand Not Downloading: Fix Guide
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.