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Exchange 2010 SP1 Upgrade fails on CAS role

Posted on 2010-09-07
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Last Modified: 2012-05-10
I am busy upgrading our Exchange 2010 servers to SP1 and two servers were successfully updated, the third server fails on the CAS role which fails with the following error

Exchange Server component Client Access Role failed.
Error: Error:
The following error was generated when "$error.Clear();
          $CommandAppCmd = join-path $env:SystemRoot System32\inetsrv\appcmd.exe;
          $imagePath = [System.IO.Path]::Combine($RoleInstallPath, "ClientAccess\Owa\auth\exppw.dll");
          Start-SetupProcess -Name "$CommandAppCmd" -args "install module /name:exppw /image:`"$imagePath`" /add:false" -IgnoreExitCode @(183);
          Start-SetupProcess -Name "$CommandAppCmd" -args "add module /name:exppw /app.name:`"Default Web Site/owa`"" -IgnoreExitCode @(183);
        " was run: "Process execution failed with exit code 1346.".
 
Process execution failed with exit code 1346.


Any help would be appreciated
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Question by:davidjuste
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LVL 9

Expert Comment

by:v_9mhdrf
ID: 33624361
Please follow this link and install all the pre-requisites before upgrading to Exchange 2010 Sp1.

http://msexchangeteam.com/archive/2010/09/01/456094.aspx

Hope this Helps

Thanks,
Mohammed :-)
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Author Comment

by:davidjuste
ID: 33624669
I have installed the Hotfixes from this website already
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LVL 26

Expert Comment

by:e_aravind
ID: 33624820
It looks like the exppw.dll is causing the issue
- Can you try re-registering this exppw.dll DLL on the server ..then continue further?

what is the difference between this CAS and other 2 CAS servers?
Any chance you added iisadmpwd on this box?
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Author Comment

by:davidjuste
ID: 33625229
I have tried registering the DLL but it gives an error about no start point, I have tried using the DLL from one of the successful server also get the same issue. The only difference is that this server is running the UM role, but other then that they are all the same. All running HT,CAS and MB roles
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Accepted Solution

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davidjuste earned 0 total points
ID: 33768544
Found out what was causing the issue, change the following
Open the IIS Manager in PROGRAMS->Administrative Tools
Expand SITES then click on Default Web Site.  On the right hand site in the Actions section click on Advanced Settings (It's about midway down, just above Configure)
In the window that pops up, click on "Physical Path Credentials".  This should make a box with ... in it appear.  Click on that and make sure it is set for "Application User (pass-through authentication)"

Upgrade will now continue
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