Update Rollup 4 for Exchange Server 2010

Looks like there is at least one more update before Exchange 2010 SP1 is released.  RU4 for Exchange 2010 was published today.

You can download it immediately here: http://www.microsoft.com/downloads/details.aspx?FamilyID=09B4973E-3A80-4FB9-9F60-5C6E2B7A2727&displaylang=en

Or first read below for a list of issues that the update rollup fixes:

Update Rollup 4 for Exchange Server 2010 RTM fixes the issues that are described in the following Microsoft Knowledge Base articles:

979342 (http://support.microsoft.com/kb/979342/ ) An attachment is not visible when an Exchange Server 2010 user opens a signed mail message by using Outlook 2003

979517 (http://support.microsoft.com/kb/979517/ ) You cannot send a message to a Dynamic Distribution Group in a mixed Exchange Server 2007 and Exchange Server 2010 environment

979790 (http://support.microsoft.com/kb/979790/ ) An IMAP4 client crashes when accessing an Exchange Server 2010 mailbox

979801 (http://support.microsoft.com/kb/979801/ ) An error message is generated in Exchange Server 2010 when you use Exchange Troubleshooting Assistant

979810 (http://support.microsoft.com/kb/979810/ ) You cannot connect an Exchange Server 2010 mailbox by using a MAPI client

979848 (http://support.microsoft.com/kb/979848/ ) Event ID 1066 is logged and you cannot move a mailbox from an Exchange Server 2003 server to an Exchange Server 2010 server

979862 (http://support.microsoft.com/kb/979862/ ) Event ID 4999 and Event ID 7031 are logged when you move a mailbox to an Exchange Server 2010 server

979921 (http://support.microsoft.com/kb/979921/ ) You cannot replicate a public folder from one Microsoft Exchange Server 2010 server to another, and Event ID 3079 is logged on the target server

980149 (http://support.microsoft.com/kb/980149/ ) The Add-MailboxDatabaseCopy command fails when it is used to add a database copy to a Database Availability Group in an Exchange Server 2010 environment

980353 (http://support.microsoft.com/kb/980353/ ) A MAPI application that is used to access Exchange Server 2010 mailboxes crashes when the application accesses an address book

980354 (http://support.microsoft.com/kb/980354/ ) “MAPI_E_INVALID_PARAMETER” error message when you copy email messages from an Exchange Server 2010 mailbox

980364 (http://support.microsoft.com/kb/980364/ ) Microsoft Exchange Transport service on an Exchange Server 2010 server crashes when a certain message is processed

980701 (http://support.microsoft.com/kb/980701/ ) An Exchange Server 2010 mailbox user receives a NDR error message when the user sends an email message to multiple internal users

980852 (http://support.microsoft.com/kb/980852/ ) The RpcClientAccess process on an Exchange Server 2010 server crashes when you access a mailbox by using a MAPI application

981033 (http://support.microsoft.com/kb/981033/ ) Error message when you expand the Microsoft Exchange On-Premises node in the EMC of Exchange Server 2010

981961 (http://support.microsoft.com/kb/981961/ ) Event ID 4033 is logged and the Free/Busy replication from an Exchange Server 2003 server to an Exchange Server 2010 server fails

982209 (http://support.microsoft.com/kb/982209/ ) Some embedded messages are corrupted when they are contained in a message that is sent from an Exchange Server 2010 mailbox address

982378 (http://support.microsoft.com/kb/982378/ ) A delegate receives only one meeting request when someone sends a meeting request to several principals in an Exchange Server 2010 RU1 or later environment

982944 (http://support.microsoft.com/kb/982944/ ) The msExchVersion attribute value of a user is stamped incorrectly after you run the Enable-MailUser cmdlet to mail-enable the user

983200 (http://support.microsoft.com/kb/983200/ ) The .xls file as an attachment is empty when you access an Exchange Server 2010 mailbox by using OWA

983631 (http://support.microsoft.com/kb/983631/ ) “redirect it to people or distribution list” rule does not work on an Exchange Server 2010 mailbox address

2084061 (http://support.microsoft.com/kb/2084061/ ) A user intermittently fails to access an Exchange Server 2010 mailbox after the mailbox is moved

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