I have been getting this error every time a user tries to add a new
contact to their contact list. I now have the agent logging into
EDirectory with an Admin equivalent and no change. I have given all
necessary permissions for this to occur (trustee rights). I'm not really
sure what else to do. The error on the console is "DDC: Error writing to
the directory." Anyone experienced this?

This tid didn't help either Users can't add Contacts to Messenger. -