Sign in with Microsoft
Sign in or create an account.
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.


This update is no longer available. To fix the issues that are described in this article, install the latest Microsoft Exchange Server update from the following Microsoft Learn article:

Exchange Server build numbers and release dates

Microsoft provides download files only for N-2 versions for an Exchange Server cumulative update (CU), where "N" is the latest CU. The latest CU can be used to recover servers that are running Exchange Server. This includes servers that have a previous CU installed.

Since the release of Microsoft Exchange Server 2013 Service Pack 1 (SP1), Microsoft has become aware of an issue that affects some customers who use transport agents that are provided by third-party OEMs. For more information about this issue and a supported fix, see the following Microsoft Knowledge base article:

2938053 Third-party transport agents cannot be loaded correctly in Exchange Server 2013


Microsoft has released Microsoft Exchange Server 2013 Service Pack 1 (SP1). This service pack is dated February 25, 2014. This article describes the following information about the service pack:

  • The issues that the service pack resolves

  • How to obtain the service pack

  • The prerequisites for installing the service pack

For more information about the coexistence of Exchange 2013 and earlier versions of Exchange Server in the same environment, go to the following Microsoft website:

Exchange 2013 System Requirements


Issues that the service pack resolves

This service pack resolves the issues that are described in the following Microsoft Knowledge Base (KB) articles:

  • 2860242 HTML format is lost after saving as an MSG file in Exchange 2013

  • 2900076 Mailbox quota warning message uses an incorrect language in Exchange Server 2013

  • 2910199 "Reply all by IM" chat window displays seven recipients in Outlook Web App

  • 2913999 Meeting request body and instructions are lost in delegate's auto-forwarded meeting request

  • 2918655 Microsoft.Exchange.Servicehost.exe crashes after you enable FIPS

  • 2918951 Users cannot access public folders after you upgrade to Exchange Server 2013 Cumulative Update 3

  • 2925281 Outlook connectivity issue if SSLOffloading is "True" in Exchange 2013

  • 2925544 Empty ExternalURL value for ActiveSync virtual directory after build-to-build upgrade of Exchange Server 2013

  • 2927708 Resource mailboxes that are created by EAC will not be updated by policies in Exchange Server 2013

  • 2928748 Default from delegate's address in shared mailboxes in Exchange Server 2013

  • 2928803 Long server connection for Outlook after a database failover in Exchange Server 2013

  • 2930346 POP3 access does not work if the name of the resource mailbox differs from the user's name

  • 2930348 Manual redirection occurs in Outlook Web App if External URLs in each site are the same

  • 2930352 Outlook Web App cross-site silent redirection does not work in Exchange Server 2013

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Was this information helpful?

What affected your experience?
By pressing submit, your feedback will be used to improve Microsoft products and services. Your IT admin will be able to collect this data. Privacy Statement.

Thank you for your feedback!