While removing delegates from calendar error is generated "The Delegates settings were not saved correctly.  Cannot activate send-on-behalf-of list.You do not have sufficient permission to perform this operation on this object."

I Referred  and re-added AD permissions & also made desired registry settings as per below solutions in links but no luck! Please suggest.

http://support.microsoft.com/kb/2593557

 http://community.spiceworks.com/how_to/show/41829-getting-error-after-adding-new-delegates-the-delegates-settings-were-not-saved-correctly-cannot-activate-send-on-behalf-of-list-you-do-not-have-sufficient-privileges-to-perform-this-operation-on-t

Check out this blog:Solving "The Delegates settings were not saved correctly" Error on Exchange 2010

http://blogs.technet.com/b/mspfe/archive/2012/06/26/solving_2d00_the_2d00_delegates_2d00_settings_2d00_were_2d00_not_2d00_saved_2d00_correctly_2d00_error_2d00_on_2d00_exchange_2d00_2010.aspx

In addition to IgnoreSOBError, try the second solution.

-Jeff

• Edited by Jeff Hardyy 5 hours 11 minutes ago

Here's a solved version of the similar issue s yours, i hope it helps:-

http://www.outlookforums.com/threads/91419-delegate-send-drafts-delete-items-functions-on-behalf-of-client/

Check out this blog:Solving "The Delegates settings were not saved correctly" Error on Exchange 2010

http://blogs.technet.com/b/mspfe/archive/2012/06/26/solving_2d00_the_2d00_delegates_2d00_settings_2d00_were_2d00_not_2d00_saved_2d00_correctly_2d00_error_2d00_on_2d00_exchange_2d00_2010.aspx

In addition to IgnoreSOBError, try the second solution.

-Jeff

• Edited by Jeff Hardyy Tuesday, November 11, 2014 6:47 AM