WebDeploy Error - The response header 'MSDeploy.Response' was '' but 'v1' was expected.

http://blogs.msdn.com/b/cloud/archive/2011/04/19/enabling-web-deploy-for-windows-azure-web-roles-with-visual-studio.aspx

Troubleshooting Web Deploy for Windows Azure

Here are some of the most common problems with Web Deploy on Windows Azure:

Symptom: I get this error message when I try to update my Web Role instance using Web Deploy:

"Error : Web deployment task failed. (...) The response header 'MSDeploy.Response' was '' but 'v1' was expected."

Problem 1: In some IT Environments it is not possible to make SSL connections on port 8172, which is the default port for Web Deploy and the Web Management Service.

Solution 1: Change the Web Deploy port number. (see above)

Problem 2: The Web Deploy service isn’t running correctly on the Web Role instance.

Solution 2: Log into the Web Role instance with Remote Desktop and make sure that the Web Management Service and Web Deploy Service are both running. Try to restart both services.

Problem 3: Site/Application input incorrect

Solution 3: Please check your real website name via remote to web instance virtual machine IIS.

Symptom: I checked the Web Deploy checkbox when I published my Cloud Project but there is no publish profile in my Web Application project.

Problem: In some cases the publish profile gets deleted in Visual Studio 2010 RTM.

Solution: This problem is solved in Visual Studio 2010 SP1.