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Installing Exchange 2003 in 2008 R2 Domain /forestprep compatibility issues

Posted on 2010-11-24
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Last Modified: 2012-05-10
G'day,

We have setup a new Windows 2008 R2 Domain with Windows 2008 R2 Domain Controllers. However I am trying to install Exchange 2003 in this domain. I realise that I must install Exchange 2003 on Server 2003, that is fine.

However, when I attempt to run the Exchange 2003 Setup\I386\Setup.exe /forestprep and /domainprep on the Windows 2008 R2 AD server, it does work.

I receive the Program Compatibility Assistant error "This program is blocked due to compatibility issues". There is no way to ignore this error and Continue. The only options are Cancel or Check for sulutions online.

How can I prepare my 2008 R2 domain for Exchange 2003? Do I need to disable the Compatibility Assistant? If so, how? Do I even need to prepare the Domain?

Thanks for your help!
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Question by:WTAus
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Expert Comment

by:Psy053
ID: 34210395
Are you using Exchange 2003 SP2 Media?
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Expert Comment

by:Psy053
ID: 34210404
Also, have you tried disabling the Program Compatability Assistant?

From what I have read, you will need to use Group Policy to do so.
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Expert Comment

by:KevinTHayashi
ID: 34210420
I believe that you can disable  Program Compatability Assistant through Group Policy.  you may need to do this through the Default Domain Controller policy as it will override the local policy:

Computer Configuration > Policies > Administrative Templates > Windows Components > Application Compatibility.  Set the "Turn Off Program Compatibility Assistant" to "Enabled".
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Author Comment

by:WTAus
ID: 34210430
Well, I am using Exchange 2003 media, with a separate install to update to 2003 SP2. But I dont think that is the problem, since even the SP2 update gets blocked before it runs.

I've tried to disable the Program Compatability Assistant by doing the following:
On the DC, run Administrative Tools > Group Policy Management
2) Expanded Domain Controllers > right-click Default Domain Controller Policy > Edit
3) Set Computer Configuration > Policies > Administrative Templates > Windows Components > Application Compatibility > set Turn off Program Compatibility Assistant to ENABLED

But this doesnt seem to have any effect... the Program Compatibility Assistant still keeps coming up. I even tried it for Default Domain Policy, with the same results...

Is there a way to verify if the server is actually picking up the Group Policy? Or is there another way to disable it?

Thanks
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Expert Comment

by:KevinTHayashi
ID: 34210453
You can run gpupdate from the command line to refresh the policy.  Is the server that you are trying to run this on actually under the Domain Controllers container within AD?  Just want to make sure its not a member server.
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Author Comment

by:WTAus
ID: 34210466
Tried refreshing, still blocks it. And yep, the computer is definately under the Domain Controllers group. It is the only server running at the moment...

Interestingly, the error in the Event Properties is: "The application (Microsoft Exchange Server, from vendor Microsoft) was hard-blocked and raised the following: Microsoft Exchange Server has a known compatibility issue with this version of Windows.

Could it be because we are using 32-bit media on the x64 Windows 2008? Microsoft doesnt seem to offer any help at all...
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by:KevinTHayashi
ID: 34210482
You should be able to run the 32bit executable on the 64bit OS.. just couldnt do it the other way around.

Run "gpresult /H Desktop/GPResult.html" from the command prompt.  This should generate a report that shows you all of the Group Policy settings applied after s GPUPDATE.
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Author Comment

by:WTAus
ID: 34210499
OK, I did that, and it is definately applying correctly. Also check the reg key HKLM\SOFTWARE\Policies\Microsoft\Windows\AppCompat!DisablePCA has value 1
Also ran rsop.msc and it shows the policy as applying... yet the program is still blocked by PCA!
What on earth could be going on?
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Author Comment

by:WTAus
ID: 34210533
OK........... I found somewhere that said if you rename the .exe it will work... and it did... <sigh>
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by:KevinTHayashi
ID: 34210597
Lol. Ok. Good luck!
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Expert Comment

by:rjwesley
ID: 34210801
Are you attempting to install Exchange 2003 on your 2008 server Domain Controller? This of course is not recommended by Microsoft.

Best to install exchange on a member server.

"Exchange 2003 on Windows Server 2003 x64 editions is not supported." from link --> http://msexchangeteam.com/archive/2005/07/11/407529.aspx - I presume the same goes for 2008 server 64-bit

best options are to downgrade to server 2008 32-bit (R2 only available in 64-bit) or upgrade to exchange 2010 installed on a true 64-bit system and OS...the latter probably being the better option

Rob
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Expert Comment

by:Psy053
ID: 34210824
The OP has specified that Exchange will be installed on a 2K3 Server, and not on his 2008 R2 DC's
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Author Comment

by:WTAus
ID: 34477944
We finally fixed the issue by increasing the uploadReadAheadSize to 200MB... it is surprising that this was causing the problem... still, it fixed it! Too bad no one on the entire Experts Exchange knew that... would have saved us many weeks of searching...
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Accepted Solution

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WTAus earned 0 total points
ID: 34477954
Oops, previous post was for the wrong Question... The exchange problem was solved simply by the fact that you cannot, and in fact dont even need to, "prepare" a 2008 domain for a 2003 Exchange server... you simply install Exchange 2003 on a Windows 2003 Server computer and it will work fine, even in a 2008 Domain.
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Author Closing Comment

by:WTAus
ID: 34510089
Figured it out myself
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