Fix BitLocker 504 Gateway Timeout on Network Drives - How to Fix RDP Error 0x4 on Mac-Resolve OneDrive Sync Access Denied

Updated 2026-06-14 18:40:12backup-recovery
Fix BitLocker 504 Gateway Timeout on Network Drives - How to Fix RDP Error 0x4 on Mac-Resolve OneDrive Sync Access Denied
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.