Hello,

I am attempting to install Forefront Protection 2010 for Exchange Server on my two node DAG.  It gets part way through the installation and fails with the following error: "There is a problem with this Windows Installer package.  A DLL required for this install to complete could not be run.  Contact your support  personnel or package vendor."

This package installed perfectly fine on the first of the two servers, so  

• I tried downloading the software again to make sure there wasn't corruption issues.
• I uninstalled and re installed the software on my first node with the new package, it worked just fine.  
• I tried shutting down all Exchange and Forefront services before installing the software.

Same results no matter what I do.  Does anyone have any suggestions?

Server 2008 R2 ENT SP1

Exchange 2010 Version 14.02.0342.003

Here is a copy and paste from the event log:

Event 11723, MsiInstaller

Product: Microsoft Forefront Server Protection -- Error 1723. There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor.  Action checkServiceList, entry: checkServiceList, library: C:\Users\patrick\AppData\Local\Temp\2\MSIDA09.tmp 

Hi,

Thank you for the post.

Please verify the system requirement on the second node: http://technet.microsoft.com/en-us/library/cc482970.aspx

Regards,

My server exceeds the minimum requirements, I suppose I shouild have included that information.

I found this currious entry in the setup log.

It seems if I could determine what "checkServiceList" did, perhaps that would give me a clue where to look

Hi,

Thank you for the post.

Due to the complexity of this issue we are unable to effectively assist with this request in the forum. I would like to suggest that you contact Microsoft Product Support Services via telephone so that a dedicated Support Professional can assist with this request.  

Regards,

Thanks Nick,

I will post the answer once we figure this one out.

Patrick

The problem turned out to be an OS issue. Somehow the "Dbghelp.dll" was missing , which is normally located  in C:\windows\syswow64\dbghelp.dll. 

The solution was a simple one:  I ran sfc /scannow from a command prompt and it repaired the missing file.  I was then able to install FPE.

So, I guess unless someone has the same situation and happen to be installing Forefront Protection for Exchange, they will probably never stumble on this and find it helpful.  I guess well have to wait and see.  :-)

For more on System File Checker (FSC), read this: http://support.microsoft.com/kb/929833