During the installation of Rollup 8 you may notice that it takes a very long to install and you keep seeing the message "Creating Native images for .Net assemblies".

This is expected on a exchange server that doesn't have an internet connection, basically for every assembly that it has to compile it will try to connect to the certificate revocation list hosted at Microsoft (crl.microsoft.com) and timeout.

To resolve this problem, turn off the Check for publisher’s certificate revocation option on the server that is being upgraded. To do this, follow these steps:

1. In Windows Internet Explorer, click Tools, click Internet Options, click Advanced tab, and then locate the Security section.
2. Click to clear the Check for publisher’s certificate revocation check box.
3. Click OK to close the Internet Options dialog box.

It is considered safe to clear this security option in Internet Explorer if the computer is in a tightly controlled environment. After the setup has completed, turn on the Check for publisher’s certificate revocation option again

In addition certain Exchange Server 2007 managed code services may not start after you install this update rollup., This problem occurs because you do not have a Microsoft .NET Framework common language runtime (CLR) build that supports the generatePublisherEvidence configuration setting. If you are using the .NET Framework 2.0, install one of the following software updates:

• .NET Framework 2.0 Service Pack 1
  
  For more information, click the following article number to view the article in the Microsoft Knowledge Base:
  945757   (http://support.microsoft.com/kb/945757/ ) Problems that are fixed in the .NET Framework 2.0 Service Pack 1
• Software update 936707 with CRL build 2.0.50727.876
  
  For more information, click the following article number to view the article in the Microsoft Knowledge Base:
  936707   (http://support.microsoft.com/kb/936707/ ) FIX: A .NET Framework 2.0 managed application that has an Authenticode signature takes longer than usual to start
• Software update 942027 with CRL build 2.0.50727.926
  
  For more information, click the following article number to view the article in the Microsoft Knowledge Base:
  942027   (http://support.microsoft.com/kb/942027/ ) FIX: You may notice that the memory load is very high when you run an application that is built on the .NET Framework 2.0

For more information check http://support.microsoft.com/kb/968012

kudos to SPeeDyT for reporting this in our community forums.. keep it up !! :-) 

Sincerely,

Tonino Bruno | ICT Consultant | ww.proexchange.be