Fix OneDrive Sync Permission Denied & Connection Refused - How to Fix 'Outlook File Locked in Use by Another Process'-Fix Windows Security Network Connection Problems

Updated 2026-06-14 19:29:06office-tools
Fix OneDrive Sync Permission Denied & Connection Refused - How to Fix 'Outlook File Locked in Use by Another Process'-Fix Windows Security Network Connection Problems
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.