Fix 'Module Not Found' Error in Command Prompt on Windows 10 - Teams Migration Contact Sync Not Working-Troubleshooting 502 Bad Gateway on Windows Activation

Updated 2026-06-18 23:46:35office-tools
Fix 'Module Not Found' Error in Command Prompt on Windows 10 - Teams Migration Contact Sync Not Working-Troubleshooting 502 Bad Gateway on Windows Activation
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.