Microsoft has released Update Rollup 5 for Microsoft Exchange Server 2010 Release to Manufacturing (RTM). This article describes the following information about the update rollup:
The issue that the update rollup fixes
How to obtain the update rollup
The prerequisites to install the update rollup
Issue that the update rollup fixes
Update Rollup 5 for Exchange Server 2010 RTM fixes the issue that is described in the following Microsoft Knowledge Base article:
2266458 You cannot uninstall Exchange Server 2010 RTM after you install Update Rollup 2, Update Rollup 3, or Update Rollup 4 for Exchange Server 2010
Update rollup information
To download and to install Update Rollup 5 for Exchange Server 2010 RTM, visit the following Microsoft Update website:
Microsoft Update does not detect Update rollups on Exchange Server 2010 Mailbox servers that are part of a database availability group (DAG). However, you can obtain the update from the Microsoft Download Center.
The update rollup can also be deployed to multiple computers that are running Exchange Server 2010 RTM.
Important information for customers installing the update on computers not connected to the Internet
When you install the update rollup on a computer that is not connected to the Internet, you may experience long installation times. Additionally, you may receive the following message:
"Creating Native images for .Net assemblies."
This behavior is caused by network requests that connect to the http://crl.microsoft.com/pki/crl/products/CodeSigPCA.crl website. The network requests look up the certificate revocation list for each assembly that native image generation (NGen) compiles to native code. However, if the Exchange Server is not connected to the Internet, then each request must wait to time-out before the installation can continue.
To resolve this problem, disable the Check for publisher’s certificate revocation setting on the server that you are upgrading.
1. In Internet Explorer, select Tools, select Internet Options, and then click the Advanced tab.
2. In the Security section, clear the Check for publisher's certificate revocation check box.
3. Click OK to close the Internet Options dialog box.
We recommend that you clear this security option in Internet Explorer if the computer is in a tightly controlled environment. When setup is complete, recheck the Check for publisher’s certificate revocation check box.
Important information for Outlook Web App users about Outlook Web App customization
When you apply an update rollup, the update process will overwrite any required Outlook Web App files. If you have changed the Logon.aspx file or other Outlook Web App files, the customizations will be overwritten to make sure that Outlook Web App is updated correctly. After you apply the update rollup, you must re-create any Outlook Web App customizations.
We recommend that you always make a backup copy of any customized Outlook Web App files before you apply the update rollup. For more information about Outlook Web App customization details, visit the following Microsoft website:
General information about Outlook Web App customization details
If you are a CAS Proxy Deployment Guidance customer, and if you have deployed CAS-CAS proxying, apply the update rollup to the Internet-facing Client Access servers before you apply the update rollup to the non-Internet-facing Client Access servers. For other Exchange Server 2010 configurations, the order in which you apply the update rollup on the servers is not important.
For more information about CAS-CAS proxying, visit the following Microsoft Website:
The following list contains the prerequisites for Update Rollup 5 for Exchange Server 2010 RTM:
Exchange Server 2010 RTM must be installed on the computer before you apply this update rollup.
All interim updates for Exchange Server 2010 RTM must be removed before you apply this update rollup.
Required services are automatically stopped and then restarted when you apply this update rollup.
To remove Update Rollup 5 for Exchange Server 2010 RTM, use Add or Remove Programs in Control Panel. Then, remove update 2407113.
For more information about terminology that Microsoft uses to describe software updates, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates