After the initial Azure AD Sync and ADFS ready configured I was starting on the Cutover migration for this project.
I was unable to create the endpoint to the on-premises Exchange 2010, and I recieved the following message when running the “test-migrationserveravailablilty”
“We weren’t able to connect to the remote server. Please verify that the migration endpoint settings are correct and your certificate is valid”
However all my settings on the on-prem Exchange were ok and tested successfully with the Microsoft remote Connectivity Analyzer
So kind of stuck then!
Well, the solution was to disable IPv6 on the On-premises Exchange server.
This is done by editing the registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\
And create a DWORD 32bit value with the name “DisabledComponents”
Disable IPv6 with a value of 0xff
This procedure is described in detail here: Disable IPv6
So after a boot, this solved my 365-Exchange connection issue using Outlook Anywhere, and the cutover migration could continue.
What a life:)
