Steve Spencer's Blog

Blogging on Azure Stuff

Error calling Azure Access Control Management Service

I’ve been developing a web application that adds rules to the access control service when a user registers with my website. This was working well using the ACS in AppFabricLabs. When I ported across to ACS V2 in the live environment I kept getting an exception thrown whenever I tried to retrieve information via the management service api.

The exception details are

The remote server returned an error: (400) Bad Request.

Status = protocol error

After investigation by looking at the latest ACS code samples on MSDN I noticed that the protocol has actually changed in the Common assembly ManagementServiceHelper.cs class. Comparing the code and copying the changes across to mine fixed the problems.

I also noticed that today that AppfabricLabs was updated last night and now uses the same protocol as V2 Live so you will need to make these changes anyway.