Hi Hasan, Which version of Exchange server do you use? Exchange 2007 or Exchange 2010? Is there any related error event in the Event Viewer? Please run the Setup /prepareAD again to see whether it works. Please also run the Exbpa in the Toolbox to do a Health Check. Please check permission as KB said: Default permissions for the MachineKeys folders http://support.microsoft.com/kb/278381Frank Wang TechNet Community Support

Have you refre this thread : http://social.technet.microsoft.com/Forums/eu/exchangesvradmin/thread/891dac12-7465-4517-a153-eedc5afb4f5f Also check this one : http://ilantz.wordpress.com/2008/08/12/sesecurityprivilege-issues-while-running-setup-for-exchange-2007/ Viral Rathod Blog : http://viralr.wordpress.com I checked these already. ONLY permissions were not set for EVERYONE.......but permission to my user ID were set. I include EVERYONE permission and login again. and it is running that comamnd. no more error. but i dont understand what was wrong, when my user was given full access permission then why EVERYONE was required???Hasan

when my user was given full access permission then why EVERYONE was required??? Hi Hasan, You can check the "Effective Permission" for your account. Maybe the permission is denied to a group which contains your account.Frank Wang TechNet Community Support

Hi Hasan, Which version of Exchange server do you use? Exchange 2007 or Exchange 2010? Is there any related error event in the Event Viewer? Please run the Setup /prepareAD again to see whether it works. Please also run the Exbpa in the Toolbox to do a Health Check. Please check permission as KB said: Default permissions for the MachineKeys folders http://support.microsoft.com/kb/278381 Frank Wang TechNet Community Support Hi, I have exchange 2007. this is production environment so i cant take risk of setup /preparead command. i have run exbpa but it is showing all set. THe KB which u tell is not applying on windows 2008 server. I am unable to find All Users Profile\Application Data\Microsoft\Crypto\RSA I found it in my user profile...........permissions were not set for EVERYONE.......but permission to my user ID were set. I include EVERYONE permission and login again. and it is running that comamnd. no more error. but i dont understand what was wrong, when my user was given full access permission then why EVERYONE was required??? Hasan

Hi, When I run get-exchangecertificate I get the error: WARNING: An unexpected error has occurred and debug information is being generated: The process does not possess the 'SeSecurityPrivilege' privilege which is required for this operation. Get-ExchangeCertificate : The process does not possess the 'SeSecurityPrivilege ' privilege which is required for this operation. At line:1 char:23 + Get-ExchangeCertificate <<<< It is being run as administrator and in the local security policy as well as domain security policy at DC 'manage auditing and security log' includes Exchange Servers. Please help. Hasan

Have you refre this thread : http://social.technet.microsoft.com/Forums/eu/exchangesvradmin/thread/891dac12-7465-4517-a153-eedc5afb4f5f Also check this one : http://ilantz.wordpress.com/2008/08/12/sesecurityprivilege-issues-while-running-setup-for-exchange-2007/Viral Rathod Blog : http://viralr.wordpress.com