Fix Outlook Auto-Start Not Working After Reinstall - How to Fix 'Remote Desktop Module Missing mstscax.dll' Error-Fix Windows Defender Real-Time Protection Greyed Out

Updated 2026-06-14 11:36:41cloud-software
Fix Outlook Auto-Start Not Working After Reinstall - How to Fix 'Remote Desktop Module Missing mstscax.dll' Error-Fix Windows Defender Real-Time Protection Greyed Out
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.