Update rollup information
To download and install Update Rollup 4 for Exchange Server 2010 SP1, visit the following Microsoft Update website: Note
Microsoft Update does not detect Update rollups on Exchange Server 2010 Mailbox servers that are part of a database availability group (DAG).
To use this update rollup in the following scenarios, the update rollup is also available from the Microsoft Download Center:
- Deploy Update Rollup 4 for Exchange Server 2010 SP1 to multiple computers that are running Exchange Server 2010 SP1.
- Deploy Update Rollup 4 for Exchange Server 2010 SP1 to Mailbox servers that are part of a database availability group (DAG).
The file is available for download from the following Microsoft Download Center website:
Release date:July 27, 2011.Update issue on computers that are not connected to the Internet
When you install this 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 issue occurs because of network requests for the http://crl.microsoft.com/pki/crl/products/CodeSigPCA.crl
When the network requests look up the certificate revocation list for each assembly that native image generation (NGen) compiles to native code, each request must time out before the installation continues.
To resolve this issue, disable the Check for publisher’s certificate revocation
security option in Internet Explorer. To do this, follow these steps:
- In Internet Explorer, click Tools, click Internet Options, and then click the Advanced tab.
- Under the Security section, clear the Check for publisher's certificate revocation check box.
- Click OK.
We recommend that you clear this security option in Internet Explorer if the computer is in a tightly controlled environment. After you install this update, re-enable the Check for publisher’s certificate revocation
security option.Update issue on computers that have customized Outlook Web App files Important
Before you apply the update rollup, we recommend that you make a backup copy of any customized Outlook Web App files. For more information about how to customize Outlook Web App, visit the following Microsoft website:
When you apply an update rollup package, the update process updates the Outlook Web App files if they are required. Therefore, any customizations to the Logon.aspx file or to other Outlook Web App files are overwritten, and you must re-create the Outlook Web App customizations in Logon.aspx. Update issue for CAS Proxy Deployment Guidance customers who deploy CAS-CAS proxying
If you meet both of the following conditions, apply the update rollup on the Internet-facing Client Access servers before you apply the update rollup on the non-Internet-facing Client Access servers:
- You are a CAS Proxy Deployment Guidance customer.
- You have deployed CAS-CAS proxying.
For other Exchange Server 2010 configurations, you do not have to apply the update rollup on the servers in a certain order.
For more information about CAS-CAS proxying, visit the following Microsoft website:
To apply this update, you must have the Exchange Server 2010 SP1 installed.Note
Remove all interim updates for Exchange Server 2010 SP1 before you apply this update rollup.
The required services are automatically restarted when you apply this update rollup.
To remove Update Rollup 4 for Exchange Server 2010 SP1, use Add or Remove Programs
item in Control Panel to remove update 2579150.
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:
Description of the standard terminology that is used to describe Microsoft software updates