We observed on a number of PCs in our company that the mime type application/pdf.A520491B_3BF7_494D_8855_7FAC2C6C0608 is defined in the registry. It's linked to .doc files. As a result, when uploading ms-word files to a web site, they are sometimes (not always) received with this incorrect mime type.
When I google for this strange mime type, I can see we're not alone.
I can delete that registry key of course, but I'd like to understand where it comes from, so we can avoid that it's being created in the first place.
Thanks in advance for your help.
Details from the registry:
Windows Registry Editor Version 5.00