Outlook for Mac Configuration Checklist - How to Troubleshoot Event ID 4625 in Windows-Fix KMS Activation Error: Port 1688 Already in Use

Updated 2026-06-14 01:57:51cloud-software
Outlook for Mac Configuration Checklist - How to Troubleshoot Event ID 4625 in Windows-Fix KMS Activation Error: Port 1688 Already in Use
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.