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Exch 2013 and 2007 coexistance, unable to login to OWA

I have a 2007 server and just installed a 2013 Exchange server. Both sit on a 2008 R2. After installing 2013, I created the new mailbox like the M guide stated. When I go to OWA however it says that "A mailbox couldn't be found for NT AUTHORITY\SYSTEM." I can however log in to ECP with the Admin account.

TexasJosh

ASKER

Been through that one over and over, thanks. Found that the only way to log in to ECP was if the server itself was a member of the Org Mana group, but that only logs in to ECP as the NT AUTH/SYSTEM account. Once you remove the server from the OM group ou can't log in to OWA or ECP. Tried rebuilding OWA and ECP virtual directories with no luck.

florin_s

I have not encountered this untill now but it seems that recreating the virtual directories is the way to go here:

https://www.experts-exchange.com/questions/28012501/Exchange-2013-reset-virtual-directories-ecp-login-failure.html

TexasJosh

ASKER

Neither of these comments are the solution. I have reset both virtual directories and have tried tcp ecp/ owa and owa/ urls but always endup with the "something went wrong" page and reference to NT AUTHORITY/SYSTEM account.

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TexasJosh

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florin_s

what caused it at least?

TexasJosh

ASKER

Had to break down and spend 8 hours on the phone with Microsoft Premier Support. They resolved it but way too complex to recreate!