Exchange 2010 SP1 Upgrade fails on CAS role

Posted on 2010-09-07
Medium Priority
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
Question by:davidjuste
  • 3

Expert Comment

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


Hope this Helps

Mohammed :-)

Author Comment

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

Expert Comment

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?

Author Comment

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

Accepted Solution

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

Featured Post

Free tool for managing users' photos in Office 365

Easily upload multiple users’ photos to Office 365. Manage them with an intuitive GUI and use handy built-in cropping and resizing options. Link photos with users based on Azure AD attributes. Free tool!

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.

Join & Write a Comment

I am posting this in case anyone runs into similar issues that I did, this may save you a lot of grief: Condition: 1. Your NetBIOS domain name contains an ampersand " & " character.  (e.g. AT&T) 2. You've tried to run any Microsoft installation…
This article describes Top 9 Exchange troubleshooting utilities that every Exchange Administrator should know. Most of the utilities are available free of cost. List of tools that I am going to explain in this article are:   Microsoft Remote Con…
The video tutorial explains the basics of the Exchange server Database Availability groups. The components of this video include: 1. Automatic Failover 2. Failover Clustering 3. Active Manager
Watch the video to know how one can repair corrupt Exchange OST file effortlessly and convert OST emails to MS Outlook PST file format by using Kernel for OST to PST converter tool. It can convert OST to MSG, MBOX, EML to access them. It can migrate…

600 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question