I am trying to migrate some users over to Zoho from our Exchange server. I have done this before with no problems but now it is giving me an error that says "Session is invalid, could not able to get mailbox." (please see screenshot)

I have installed it as admin, am running the program as admin. I have also tried restarting the server and the service. All the mailboxes are valid and there. I have also set all of them to have full permissions to the admin. I am trying to migrate 5 users. I have tried it with just one user and it gives me the same error too.

It gets through all the steps fine until the "User Folder Details" step. I have tried to "continue" but the migration fails.

Could you please let me know how to fix this so I can get the users migrated over?

Thank you

Mike