Microsoft has released Update Rollup 6 for Microsoft Exchange Server 2010 Service Pack 1 (SP1).

This update is dated October 27 2011.

This article describes the following information about the update rollup:

Update Rollup 6 for Exchange Server 2010 SP1 resolves the issues that are described in the following Microsoft Knowledge Base (KB) articles:

• 2431609                                         (http://support.microsoft.com/kb/2431609/)        An update is available that updates the message of a retention policy in OWA for Exchange Server 2010
• 2449266                                         (http://support.microsoft.com/kb/2449266/)        EWS drops the TCP connection to the EWS client application without any error message in a Microsoft Exchange Server 2010 environment
• 2480474                                         (http://support.microsoft.com/kb/2480474/)        A Users do not receive quota warning messages after applying SP1 for Exchange 2010
• 2514820                                         (http://support.microsoft.com/kb/2514820/)        An incoming fax message is not delivered to the recipient in an Exchange Server 2010 SP1 environment
• 2521927                                         (http://support.microsoft.com/kb/2521927/)        Disabling the Exchange ActiveSync Integration feature for OWA does not take effect in OWA Premium clients in an Exchange Server 2010 environment
• 2528854                                         (http://support.microsoft.com/kb/2528854/)        The Microsoft Exchange Mailbox Replication service crashes on a computer that has Exchange Server 2010 SP1 installed
• 2535289                                         (http://support.microsoft.com/kb/2535289/)        The Microsoft Exchange Information Store service crashes occasionally when you run an antivirus application on an Exchange Server 2010 Mailbox server
• 2536313                                         (http://support.microsoft.com/kb/2536313/)        Slow message delivery and mailbox access for journaling mailboxes on an Exchange Server 2010 server
• 2544246                                         (http://support.microsoft.com/kb/2544246/)        You receive a NRN of a meeting request 120 days later after the recipient accepted the request in an Exchange Server 2010 SP1 environment
• 2548246                                         (http://support.microsoft.com/kb/2548246/)        The Microsoft Exchange Information Store service crashes occasionally when a folder view is corrupted on an Exchange Server 2010 mailbox server
• 2549183                                         (http://support.microsoft.com/kb/2549183/)        "There are no objects to select" message when you try to use the EMC to specify a server to connect to in an Exchange Server 2010 SP1 environment
• 2549289                                         (http://support.microsoft.com/kb/2549289/)        A RBAC role assignee can unexpectedly run the Add-MailboxPermission command or the Remove-MailboxPermission command on an Exchange Server 2010 server that is outside the role assignment scope
• 2555851                                         (http://support.microsoft.com/kb/2555851/)        A mailbox does not appear in certain address lists after you run commands on the mailbox in an Exchange Server 2010 SP1 environment
• 2559814                                         (http://support.microsoft.com/kb/2559814/)        A user cannot add or remove delegates from a mailbox by using Outlook in an Exchange Server 2010 environment
• 2561514                                         (http://support.microsoft.com/kb/2561514/)        Exchange Server 2003 user cannot view the free/busy information of a user in a different federated organization
• 2563860                                         (http://support.microsoft.com/kb/2563860/)        You cannot create a new mailbox database if you already have 1000 mailbox databases in an Exchange Server 2010 environment
• 2567409                                         (http://support.microsoft.com/kb/2567409/)        Certain free/busy messages are not replicated from an Exchange Server 2010 server to an Exchange Server 2003 server
• 2571791                                         (http://support.microsoft.com/kb/2571791/)        Retention policies are applied to Contact items unexpectedly in an Exchange Server 2010 environment
• 2572052                                         (http://support.microsoft.com/kb/2572052/)        Certain properties of a recurring meeting request from external email accounts are missing in an Exchange Server 2010 SP1 environment
• 2575005                                         (http://support.microsoft.com/kb/2575005/)        You cannot start the EMC or the EMS in an Exchange Server 2010 Service Pack 1 environment
• 2578631                                         (http://support.microsoft.com/kb/2578631/)        Certain users cannot send email messages to a mail-enabled public folder in an Exchange Server 2010 environment
• 2579172                                         (http://support.microsoft.com/kb/2579172/)        Items that are deleted or moved still appear in the original folder when you use Office Outlook in online mode to access an Exchange Server 2010 mailbox
• 2579671                                         (http://support.microsoft.com/kb/2579671/)        No results returned when you use the ExpandGroup method in EWS to retrieve a list of members of a Dynamic Distribution Group in an Exchange Server 2010 environment
• 2582095                                         (http://support.microsoft.com/kb/2582095/)        The SmtpMaxMessagesPerConnection property of a send connector is not replicated to the subscribed Edge Transport server in an Exchange Server 2010 environment
• 2600835                                         (http://support.microsoft.com/kb/2600835/)        The RPC Client Access service crashes when you delete an attachment of an item by using Outlook in online mode in an Exchange Server 2010 SP1 environment
• 2601701                                         (http://support.microsoft.com/kb/2601701/)        The memory usage of the MSExchangeRepl.exe process keeps increasing when you perform a VSS backup on Exchange Server 2010 databases
• 2616127                                         (http://support.microsoft.com/kb/2616127/)        "0x80041606" error code when you use Outlook in online mode to search for a keyword against a mailbox in an Exchange Server 2010 environment
• 2617126                                         (http://support.microsoft.com/kb/2617126/)        The Store.exe process crashes when you send an email message that has attachments in an Exchange Server 2010 SP1 environment
• 2627769                                         (http://support.microsoft.com/kb/2627769/)        Some time zones in OWA are not synchronized with Windows in an Exchange Server 2010 environment

Download Details - Microsoft Download Center - Update Rollup 6 for Exchange Server 2010 Service Pack 1 (KB2608646)
http://www.microsoft.com/download/en/details.aspx?id=27849

Happy Halloween !

João Ribeiro