Download: Rollup 4 for Exchange Server 2010 Service Pack 1

Click here to download Rollup 4 for Exchange Server 2010 Service Pack 1. 

Some of the known issues were addressed @ Update Rollup 4 for Exchange Server 2010 SP1:

  • 2465292 "MAPI_E_FAILONEPROVIDER (0x8004011D)" error message when you access an Exchange Server 2010 mailbox by using a MAPI application

  • 2394554  An email message is not delivered if it contains unsupported encoded characters in the subject line in an Exchange Server 2010 environment

  • 2491951  You cannot install Exchange Server 2010 SP1 if the NetBIOS domain name of the domain controller contains an ampersand (&) character

  • 2500648 "There are no items to show in this view." error message when you try to view a folder in Outlook in an Exchange Server 2010 environment

  • 2533538 You cannot look up the free/busy information of a user who is located on an Exchange Server 2010 organization from another Exchange Server 2010 organization

  • 2506820 The free/busy information does not display of a user whose mailbox is located on an Exchange Server 2003 server

You can get the list of issues fixed in this Rollup available here.