Here's more detail. LMK if you need more.I tried both "exportMSProject" and "exportAsMSFile" (as spec'd in the Unsupported API actions for PROJ.The outputs were the same.   exportAsMSProjectFile exportMSProject  

Hey @Sven-iX , I imported your XML and for me it runs successfully...kind of. I get a 404 status code, but it produces a file. The file, however, says this:"Note: Since your browser does not support JavaScript, you must press the Continue button once to proceed." Any ideas what I've got wrong?