Exchange Server 2013 yapısında karşılaşılan bazı problemler Cumulative Update 5 ile giderilmiş gibi görünüyor. Bu güncelleştirme, aşağıdaki Microsoft Knowledge Base (KB) makalelerinde anlatılan sorunları giderir :

• 2963590 Message routing latency if IPv6 is enabled in Exchange Server 2013
• 2963566 Outlook Web App accessibility improvement for UI appearance in Exchange Server 2013
• 2962439 You cannot sync contacts or tasks in Microsoft CRM client for Outlook in an Exchange Server 2013 environment
• 2962435 CRM synchronization fails if the time zone name of a meeting is not set in an Exchange Server 2013 environment
• 2962434 Slow performance in Outlook Web App when Lync is integrated with Exchange Server 2013
• 2958430 "Some or all Identity references could not be translated" error when you manage DAG in Exchange Server 2013 SP1 in a disjoint namespace domain
• 2957592 IME is disabled in Outlook Web App when you press Tab to move the focus in an email message in Exchange Server 2013
• 2942609 Exchange ActiveSync proxy does not work from Exchange Server 2013 to Exchange Server 2007
• 2941221 EWS integration for Lync works incorrectly in an Exchange Server 2013 and 2007 coexistence environment
• 2926742 Plain-text message body is cleared when writing in Outlook Web App by using Internet Explorer 8 in Exchange Server 2013
• 2926308 Sender's email address is broken after importing a PST file into an Exchange Server 2013 mailbox
• 2925559 Users always get the FBA page when they access OWA or ECP in Exchange Server 2013
• 2924519 "SyncHealth\Hub" folder is created unexpectedly after installing Cumulative Update 2 for Exchange Server 2013
• 2916113 Cannot open .tif files from email messages by using Windows-based applications in an Exchange Server 2013 environment
• 2592398 Email messages in the Sent Items folder have the same PR_INTERNET_MESSAGE_ID property in an Exchange Server 2010 environment
• 2938292 Default apps in Outlook Web App do not work if Exchange is installed in Window Server 2012 R2