Hi Pros,

I tried to Access the EWS Services with a new Domain user but got a "401, Unauthorized"

The WebServices are configured and I can Access the same functionality with an other Domain User.

Which permissions do I have to set to Allow the new User to create Items in a public Folder?

The user already is the owner of this Folder but there might be other Settings for IIS or Exchange I cant find...

Thanks in advance!

There are no other setting you need to set, can this user access their own mailbox using EWS ? Have you tried testing the users access using Outlook and OWA and try creating items in the public folder with these clients ?. What version of Exchange is this for ?

Cheers
Glen