The Idear: I want to Sync Calendar Items from our Company's Management Software towards Exchange. I created an "Dummy User" with access to each Account's Calendar. Now I'm trying To access those Calendars via this "Dummy User". What I did: I followed "Talking SOAP With Exchange" to connect to our Exchange Server and fetch, send the Calendar Inforamtions. Everything works as it is explained in the HowTo. The Question: Is it even Possible To Fetch Other Users Calendarinformations via this method? And How? I'm trying to get it running for some Time now, but unfortunately without any success. Thanks to everyone who could help me along.