Hello, I am trying to access Xmla via http. For development I deployed msmdpump.dll in the IIS on my local XP, everything works fine. Than I tied to deploy it on our local Win 2003 Server and this makes some trouble. I followed a German white page for deploying. When I use the IE to access msdump.dll I get the usually soap-error-message, that only Post-Request are supported. When I try to do a post request from my own .Net application, I get a soap-error that says Connection refused, fault code â XMLAnalysisError.0xc1010000â and Error Error Code="3238068224" Description="System error. (Rest is in German) Based on the error code I thought that it might be a permission problem. So I changed rights for IUser on SQL Server 2005 and on Analysis Services. I also grant IUser full permission for my virtual directory. (For testing only) This caused a strange error as result I got a 503 on my client application when executing a Post Request and my ISS stopped execution of msmdump.dll in the application pool. I was not able to find a helping error message in my log Files. When I create a new virtual directory I get the first error message again. I donât know what to do next, perhaps someone can help me, thanks in advance. If you need further information just ask. Yvette