Unable to connect to exchange server

Posted on 2014-02-26
Last Modified: 2014-05-31
I have two CAS and two Mailbox servers for my exchange 2013 running on windows 2008 R2. I am not able to connect to exchange server using outlook 2010 and 2013 when I config the outlook account. I am getting the error "exchange server is unavailable". I have attached the error. I have use Windows NLB for load balancing the two CAS servers.
Question by:jobby1
LVL 16

Expert Comment

by:Shaik M. Sajid
ID: 39891087
check  the DNS ...  

internal and external name resolution...

if not resolve the DNS internal name the issue appears... like this..

Expert Comment

by:Krishna Patil
ID: 39891088
you need to try  Virtual CAS server's name in Server name field.
LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 39891254
On Exchange 2013 Autodiscover MUST work, because the server name is actually a unique end point. Entering a real or virtual server is not going to work.

Your use of WNLB is the first point of concern - was it working before you implemented that junk? You need to bypass it as it is the cause of a lot of problems.
Then you need to check if Autodiscover is working correctly and returning the correct information.

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Author Comment

ID: 39892187
I am getting this error when test using the

Attempting to ping RPC proxy
       RPC Proxy can't be pinged.
      Additional Details
A Web exception occurred because an HTTP 404 - NotFound response was received from Unknown.
Headers received:
request-id: b07eef05-edee-4f95-87f8-f761cf3e44c9
X-CasErrorCode: EndpointNotFound
Persistent-Auth: true
X-FEServer: srvcas01
Content-Length: 0
Cache-Control: private
Date: Thu, 27 Feb 2014 16:10:24 GMT
Server: Microsoft-IIS/7.5
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Elapsed Time: 2276 ms.
LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 39892477
That is pretty obvious - the directory isn't there.
Either you haven't installed the prerequisites correctly for Exchange 2013 or your web service is messed up, perhaps the bindings are wrong.

Install Exchange 2013 SP1. That effectively reinstalls the product and will resolve a lot of issues.


Author Comment

ID: 39896864
Simon Butler (Sembee):

Which directory is missing.?

If I install the prerequisites will it solve the issue or it will mess up or should I apply the sp1 better.? Do I need to apply sp1 in all four servers or just  CAS servers.
LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 39897332
If you reinstall the pre-requisites using the command line on TechNet, then anything missing will be installed correctly.

Exchange 2013 SP1 has to be installed across all of your server, but those with the CAS role have to be done first. Be aware that there is currently a bug with third party transport agents like Exclaimer, CodeTwo and AV products which stops them from working when SP1 is installed.

The comments in the blog posting announcing the release have more information.


Author Comment

ID: 39898366
Simon Butler (Sembee):

My exchange server is  Release to Manufacturing version of Exchange 2013
December 3, 2012 15.00.0516.032

So can I directly run the exch sp1 setup in all the serves starting with CAS or should I install the CUs first.
LVL 63

Assisted Solution

by:Simon Butler (Sembee)
Simon Butler (Sembee) earned 500 total points
ID: 39898700
You can go straight to SP1 - there is no need to deploy the cumulative updates first.
Do the CAS role holders first, reboot at the end then do the mailbox servers.


Author Comment

ID: 39910647
I will apply the sp1 and update.

Accepted Solution

jobby1 earned 0 total points
ID: 40090998
After applying sp1 it is ok now

Author Closing Comment

ID: 40102431
After applying sp1 it is ok now.

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