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How to Fix 'Remote Desktop Module Missing mstscax.dll' Error - Fix Outlook Add-In Conflict That Prevents Startup-Microsoft Store Keeps Asking for Password? Here's the Fix

2026-06-13 23:12:56email-clients
How to Fix 'Remote Desktop Module Missing mstscax.dll' Error - Fix Outlook Add-In Conflict That Prevents Startup-Microsoft Store Keeps Asking for Password? Here's the Fix

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.