I had a problem where i was getting the event id 9646 logged for a user and they were stopped from logging on.
Having read the knoweldge base article 830836 i created the key MaxObjsPerMapiSession becuase it did not appear under the location in HKLM.
Thing is it has made performance on exchange really poor and now i think a bad add in may have caused the original issue on Outlook 2007 and i have removed that so now i want to sort the exchange performance.
Question is do i delete the key i added or do i change the value to the default 32?
Becuase the key did not exist before i had this problem i am leaning towards deleting it but i dont want to wreck exchange.