msxml3.dll error '80090326' `The message received was unexpected or badly formatted.`
We had to install the following KB in a Windows 2003 server:
https://support.microsoft.com/en-us/kb/948963
After this, another error:
msxml3.dll error '80072f7d'
An error occurred in the secure channel support
Thanks to this post (server giving msxml3.dll error '80072f7d' when trying to access secure url) installed the http://support.microsoft.com/kb/938397 and worked.
When aplying to production, only the first KB solved the problem.