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OWA error 401 - 22.Apr.2009 5:51:40 AM

petenorris

Posts: 24
Joined: 13.Mar.2008
Status: offline

Hi all,
I have 2 x Exchange 2007 servers (all updates):
EXMBX1 = mailbox only
EXPUB1 = Mailbox, Hub, CAS

We have an internal system that resolves http://expub1/exchange for users. We are in a co-exist environment with EX2003.
2003 clients get redirected to their own server ok (no problem), 2007 clients are also redirected correctly to http://exmbx1/exchange but they are presented with a 401.
if you explicitly put http://exmbx1/owa then fine, but this won't help us.
I have managed to ascertain the problem is with IIS authentication on exmbx1, but the cloesest I have got to fixing is to enable basic authentication. this gives the 2007 users a login prompt, which will then get them in (again this wont work for the system).
I have disabled SSL (for now)

Any help much appreciated.

Pete

Post #: 1

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RE: OWA error 401 - 23.Apr.2009 8:21:03 AM

leederbyshire

Posts: 1356
Joined: 4.Jan.2006
Status: offline

Can you find the 401 response recorded in your IIS log file?

_____________________________

Lee.
___________________________________

Outlook Web Access for PDA and WAP:
www.leederbyshire.com
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(in reply to petenorris)

Post #: 2

RE: OWA error 401 - 23.Apr.2009 8:42:40 AM

petenorris

Posts: 24
Joined: 13.Mar.2008
Status: offline

Thanks for replying Lee,

I have fixed it (after 2 days) - I think the reason I could not find any help was because it was a rare issue that probably had something to do with my install. For some reason the ISAPI.DLL in IIS had got 'disabled'?!?!? re-enabled it (at the root site level) and all works a treat!

Thanks again.

Pete.

(in reply to leederbyshire)

Post #: 3

RE: OWA error 401 - 23.Apr.2009 8:45:54 AM

petenorris

Posts: 24
Joined: 13.Mar.2008
Status: offline

Really sorry, this post is pretty misleading! I forgot a bit in the middle...

The 401 was fixed by removing, then re-adding the virtual directorys (owaVirtualDirectory).
After this I was getting 403 (file not found)... this was caused by the IMAPI.dll being disabled.

sorry.

Pete.

(in reply to petenorris)

Post #: 4