XF 1.4 Upload a File button shows permissions error, drag and drop still works


As the title says, Upload a File button no longer works and immediately shows a permission error while dropping a file to the post does work properly.

Any tips on what should I check?

Note that the flash loader is disabled.


The "do_not_have_permission" dialog:



XenForo developer
Staff member
I assume that's your customization of the phrase, so it's a XenForo-generated message.

Unfortunately, I don't really have a great suggestion for while the same file wouldn't upload "normally" though upload successfully when dropped in -- especially not spontaneously. There are some differences in the process, but they're generally similar; the requests should be very close. It may be worth seeing if you can reproduce it on a test setup on the same server; that would allow more extensive debugging.