I patched my Client Access Server today now I cannot get into OWA. EXCHANGE 2007

We are running Exchange 2007. We have a information store server in two office and a CA server in two offices. Today, I patched one of the CA servers and now some of the users are getting the following error when they try to connect to OUTLOOK WEB ACCESS;

"Outlook Web Access is not currently available for the user mailbox that you are trying to access. If the problem continues, contact technical support for your organization and tell them the following: The Microsoft Exchange Client Access server that is proxying the Outlook Web Access requests is running an older version of Microsoft Exchange than the Client Access server in the mailbox Active Directory site."

I am not sure if I should try and remove the patches I installed today or patch the rest of the exchange servers. If anyone has any ideas how I can get out of this quickly, I would appreciate it
 

--------------------------------------------------------------------------------
LVL 1
Thor2923Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

AmitIT ArchitectCommented:
Patch rest of the servers and everything will be working again. You cannot run Exchange with different patch versions, as whenever you install the patches it replaces old files from the server.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Thor2923Author Commented:
Do you think I could just patch my other CA server or do I need too patch my two Information Store servers as well? I am trying to change as little as possible since email is invovled
0
Peter HutchisonSenior Network Systems SpecialistCommented:
REally, when patching exchange, all the CAS/HT servers should be done first, then the database servers. As Thor2923 said, you should not have them all at different patch levels.
0
Thor2923Author Commented:
Well I think it is working out, my last exchange server rebooting now and last I checked OWA was fine. Just crossing my fingers as the last server comes back...thanks
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Exchange

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.