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Outlook 2010 still trying to connect to old CAS server.

Posted on 2013-06-13
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Last Modified: 2013-07-03
Hi,

I have uninstalled a cas server. The Outlook is still trying to connect to the removed CAS server.

Is there a way for user Outlook to autoconnect to the new CAS server without recreating the user profile.

Rpcclientaccessserver has been changed to the new CAS.
My exchange is 2010 sp1
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Question by:artcrest
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by:Senthil Kumar
ID: 39246786
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Simon Butler (Sembee) earned 2000 total points
ID: 39248282
Short answer - no.
You need to repair the Outlook profile, which is a manual configuration. That will force a full autodiscover process to take effect.
Microsoft state that Autodiscover should kick in to redirect the client in this scenario, but as you ahve found, more often than not this doesn't work.

You should have configured an RPC CAS Array, not just change the RPC Client Access Server to another server. Then if this happens again you can just move the DNS record.

What you should have done is:
1. Deploy RPC CAS Array, including DNS entry and the modification on the database.
2. Repair all Outlook profiles so they are using the CAS Array entry.
3. Then move the CAS Array DNS entry to the new server.
4. ONLY then remove the old CAS server.

If the old server has gone completely, and I mean completely, so not in the domain at all, then you can try setting up an entry in DNS for the old server name pointing to the new server. That might help.

Also, Exchange 2010 SP1 is very old and no longer supported. You should upgrade to Exchange 2010 SP2 or preferably SP3. Although that upgrade will not help with this problem.

Simon.
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