Hello, I need to remove my exchange 2007, but this error ocurr when i try to uninstall: Welcome to Microsoft Exchange Server 2007 Unattended Setup Preparing Exchange Setup The following server roles will be removed Mailbox Role Unified Messaging Server Role Client Access Role Hub Transport Role Management Tools Performing Microsoft Exchange Server Prerequisite Check Organization Checks ......................... COMPLETED Configuring Microsoft Exchange Server Mailbox Server Role ......................... FAILEDAn unexpected error has occurred and debug information is being generated: An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B) An attempt was made to load a program with an incorrect format. (Exceptionfrom HRESULT: 0x8007000B) How i resolve this issue?

Hi, You can verify thesetup log,it may give yousome clue/error Exchange 2007 setup logs and how to use them to troubleshoot setup http://msexchangeteam.com/archive/2007/05/07/438433.aspx Besides, can you explain your environment with Operating System & Exchange version and edition (32/64 bit)? Is it production environment or testing?

Issue description: Exchange 2007 cannot be uninstalled An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B) HRESULT=0x8007000B=COR_E_BADIMAGEFORMAT, .Net report this error by throwing out the exception BadImageFormatException, which indicates one or multiple file images of the executable programs or DLLs are invalid Check info: 1. Please describe the topology and versions of OS 2. Please reproduce the issue and check the application log to search related error events 3. As Amit said, please check the setup log for more detailed error info Possible cause: It looks like we are getting error on WMI [Heres the troubleshooting steps]