Microsoft have released Update Rollup 2 for Exchange Server 2010 Service Pack 2 which resolves many issues that have been reported since the initial release of Exchange 2010 Service Pack 2

Summary of Fixes:

http://support.microsoft.com/kb/2519806 – A meeting request that is sent by an external user or by using a non-Microsoft email system is stamped as Busy instead of Tentative in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2556766 – Slow performance when you create many contacts by using Exchange Web Services in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2592398 – Email messages in the Sent Items folder have the same PR_INTERNET_MESSAGE_ID property in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2601301 – Customized contact objects revert to the default form after a public folder database replication in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2630808 – A user can log on to a mailbox by using Outlook for Mac 2011 unexpectedly in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2632201 – MAPI_E_INVALID_PARAMETER errors occur when a MAPI application receives notifications in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2635223 – A hidden user is still displayed in the Organization information of Address Book in OWA in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2636387 – Event ID 3022 is logged and you cannot replicate a public folder from one Exchange Server 2010 server to another

http://support.microsoft.com/kb/2636883 – Returned message items can disappear from the search results view when you use Outlook in online mode in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2641249 – Error message when you use the “Folder.Bind” method in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2641753 – An email message from an Exchange Server 2003 user is forwarded incorrectly to an external recipient of an Exchange Server 2010 user mailbox

http://support.microsoft.com/kb/2644144 – A read receipt is not sent when a receiver does not expand a conversation to preview the message by using OWA in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2644920 – The Get-FederatedDomainProof cmdlet fails in an Exchange Server 2010 SP1 environment

http://support.microsoft.com/kb/2645587 – An external email message is not delivered to mail-enabled public folders and you do not receive NDR messages in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2649499 – Updates for a meeting request are sent to all attendees directly in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2649679 – Text in tables is displayed incorrectly in the Conversation view in Outlook Web App in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2652730 – You encounter failures when you run the Test-EcpConnectivity cmdlet to test Exchange Control Panel connectivity in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2657103 – CPU resources are used up when you use the Set-MailboxMessageConfiguration cmdlet in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2660178 – “More than one mailbox has the same e-mail address” error message when you try to manage a mailbox in a tenant organization in an Exchange Server 2010 SP1 Hosting mode environment

http://support.microsoft.com/kb/2661277 – An ActiveSync user cannot access a mailbox in an Exchange Server 2010 forest

http://support.microsoft.com/kb/2661294 – An email address policy does not generate the email addresses of recipients correctly in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2663581 – OK button is not displayed when you change your password in Outlook Web App by using Firefox in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2664365 – Certain MailboxStatistics properties are not updated when a user uses a POP3 or IMAP4 client to access a mailbox in an Exchange 2010 environment

http://support.microsoft.com/kb/2664761 – DPM protection agent service may stop responding on Exchange Server 2010 servers that are protected by System Center DPM 2010

http://support.microsoft.com/kb/2665806 – Error message when you open an RTF email message that has inline attachments in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2673087 – Error message when you try to copy the Inbox folder to another folder in Outlook in online mode in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2677847 – The Microsoft Exchange File Distribution service consumes large amounts of memory in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2678361 – The user-agent information about an Exchange ActiveSync device is not updated in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2678414 – The display name of a contact in address book is empty in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2681464 – An EWS application crashes when it calls the GetStreamingEvents operation in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2685996 – Error message when a user who does not have a mailbox tries to move or delete an item that is in a shared mailbox by using Outlook Web App Premium

http://support.microsoft.com/kb/2688667 – W3wp.exe consumes excessive CPU resources on Exchange Server 2010 Client Access servers when users open recurring calendar items in mailboxes by using Outlook Web App or EWS

http://support.microsoft.com/kb/2693078 – EdgeTransport.exe process crashes in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2694280 – Whatif switch does not work in the Set-MoveRequest or Resume-MoveRequest cmdlet in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2694289 – Resource mailbox does not forward meeting request to delegates after one of the delegates’ mailbox is disabled in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2694414 – The update tracking information option does not work in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2694473 – File name of a saved attachment is incorrect when you use OWA in Firefox 8 in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2694474 – Incorrect delivery report when you send an email message to a recipient who has configured an external forwarding address in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2696857 – EdgeTransport.exe process crashes without sending an NDR message when you send a message to a distribution group in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2696905 – Day of the week is not localized in MailTips in Outlook Web App in an Exchange Server 2010 environment

http://support.microsoft.com/kb/2696913 – You cannot log on to Outlook Web App when a proxy is set up in an Exchange Server 2010 environment