Error 200 in file upload [RESOLVED]


i have installed a develop version to test issues with a problem with not attached files in the notificiation email on another server. where it has worked in the past.

on the dev site i get a “* Error: -200, Message: HTTP Error., File: test.pdf” when uploading a file. e.g. which jpg, doc, docx, pdf

how to fix this?

latest of wordpress and gravityforms.
there have been updates to the webhosting server also in the meantime.


with the gravity support i could solve it:
it was a security setting in ithemes security which cases this.