Article ID: 2756485 - View products that this article applies to.
Microsoft has released Update Rollup 4 Version 2 for Microsoft Exchange Server 2010 Service Pack 2 (SP2). This update is dated October 9, 2012. This article describes the following information about the update rollup:
Issues that the update rollup resolves
This update resolves an issue in which the digital signature on files produced and signed by Microsoft expires prematurely, as described in Microsoft Security Advisory 2749655
(http://technet.microsoft.com/en-us/security/advisory/2749655). Therefore, we recommend that you install this update.
In addition to the Exchange Server 2010 issues that are described in the Microsoft Knowledge Base article 2706690
(http://support.microsoft.com/kb/2706690/ ), this update also resolves the following Exchange 2010 issue:
Update rollup informationThe file is available for download from the following Microsoft Download Center website:
Download the Exchange2010-KB2756485-x64 package now.Release date: October 9, 2012.
Important information for customers who install the update 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:
This behavior is caused by network requests to connect to the http://crl.microsoft.com/pki/crl/products/CodeSigPCA.crl
Creating Native images for .Net assemblies.
(http://crl.microsoft.com/pki/crl/products/CodeSigPCA.crl)website. These network requests represent attempts to access the certificate revocation list for each assembly that native image generation (NGen) compiles to native code. However, because the Exchange server is not connected to the Internet, each request must wait to time out before the process continues.
To resolve this issue, follow these steps:
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, go to the following Microsoft website:
Outlook Web App customization detailsWhen 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:
Note 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, go to the following Microsoft website:
General information about CAS-CAS proxying
PrerequisitesTo apply this update rollup, you must have Exchange Server 2010 SP2 installed.
Note Remove all interim updates for Exchange Server 2010 SP2 before you apply this update rollup.
Restart requirementThe required services are automatically restarted when you apply this update rollup.
Removal informationTo remove Update Rollup 4 for Exchange Server 2010 SP2, use the Add or Remove Programs item in Control Panel to remove update 2756485.
REFERENCESFor 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:
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates