Description of Update Rollup 4 for Microsoft Exchange Server 2010 Release To Manufacturing

Update rollup information

To download and to install Update Rollup 4 for Exchange Server 2010 RTM, visit the following Microsoft Update Website: Note Microsoft Update can detect Update Rollups on Exchange Server 2010 Mailbox servers that are part of a database availability group (DAG). But Microsoft recommends that you use the following article to manually install updates on these servers: 
 
You may want to deploy Update Rollup 4 for Exchange Server 2010 RTM to multiple computers that are running Exchange Server 2010 RTM. Or, you may want to deploy Update Rollup 4 for Exchange Server 2010 RTM to Mailbox servers that are part of a database availability group (DAG). To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

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:
 
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, the Exchange Server is not connected to the Internet. Therefore, each request must wait to time-out before it moves on.


To resolve this problem, turn off “Check for publisher’s certificate revocation” 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, click to 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 was 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 package, the update process will copy over the Outlook Web App files if needed. 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 package, you must re-create Outlook Web App customization in Logon.aspx.

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: 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 to the servers is not important.

For more information about CAS-CAS proxying, visit the following Microsoft Website:
Prerequisites

The following list contains prerequisites for the Update Rollup 4 for Exchange Server 2010 RTM:

• Install Exchange Server 2010 RTM on the computer before you apply this update rollup.
• Remove all interim updates for Exchange Server 2010 before you apply this update rollup.

Restart requirement

The required services are automatically stopped and then restarted when you apply this update rollup.

Removal information

To remove Update Rollup 4 for Exchange Server 2010 RTM, use Add or Remove Programs in Control Panel. Then, remove update 982639.

REFERENCES
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: