Microsoft Download Center Archive

Update for Microsoft Enterprise Single Sign-On v4 (KB2252691)

  • Published:
  • Version: 6.0.245
  • Category: Update
  • Language: English

This update corrects an assembly registration that causes a failure when .NET 4 is present on the system

  • This update fixes an issue that prevents the ENTSSO service from starting, after installing .NET Framework 4. The registration of an assembly used by the Enterprise Single Sign-On Service to access SQL Server does not specify the correct version of the .NET Framework. When .NET Framework 4 is installed, the assembly will try to use the newer framework and then fail to load.


Status: Live

This download is still available on The downloads below will come directly from the Microsoft Download Center.

FileSHA1 HashSize
ESSOv4-KB2252691-x64-ENU.exe0e040ba7dde1d6a90705580f054171223251e320148 KB
ESSOv4-KB2252691-x86-ENU.exe3ec8272f53d5fbc28f3773a90d52a9bcc61e8219148 KB

File sizes and hashes are retrieved from the Wayback Machine’s indexes. They may not match the latest versions of files hosted on Microsoft servers.

System Requirements

Operating Systems: Windows Server 2003, Windows Server 2008, Windows Vista, Windows XP

    • Enterprise Single Sign-On included with Host Integration Server 2009, BizTalk Server 2006 R2, or BizTalk Server 2009

Installation Instructions

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