After mailbox migrate from Exchange 2010 to Exchange 2013:

1. Outlook ask password

2. Owa generate error "Microsoft.Exchange.Clients.Owa2.Server.Core.OwaADUserNotFoundException"

How fix this? Please help

Does this help?

http://www.techieshelp.com/cannot-login-to-exchange-2013-ecp-after-new-install/

Hi inevg,

Have you tried the suggestion above? How about the result ?

Except above suggest, I also recommend you check if the Exchange server computer object is a member of any restricted groups, if yes, you can try to remove the object from the group;

By default, the exchange server computer object is the member of the following groups:

https://support.microsoft.com/en-us/kb/2898571

Best regards,