Exchange 2010 to O365 Migration Errors

[karldenton]

Hi

 

I have been trying to do a cutover migration over the last few weeks and keep getting errors.

 

The main one is :

AutoDiscoverFailedConfigurationErrorException: AutoDiscover failed with a configuration error: The migration service failed to detect the migration endpoint using the Autodiscover service. Consider using the Exchange Remote Connectivity Analyzer ‎(https://testexchangeconnectivity.com)‎ to diagnose the connectivity issues.

 

Autodiscover works fine for the users in question when setting up an outlook account.

 

Any suggestions please?

 

Thanks

[win]

Connect the firewall directly to the exchange server - bypass any proxies / internal firewalls in between

[karldenton]

Thanks, traffic goes from Exchange server, to a firewall server with TMG installed and then straight out to internet. No proxies involved.