FF50 reporting locked due to MIME type mismatch (X-Content-Type-Options: nosniff)

ℹ️ Support
1

Hello All,

Since upgrading to firefox 50, i started to have errors on the webgui:

The resource from “https://cloud.mydomain.com/apps/gallery/js/vendor/dompurify/src/purify.js?v=ae4f068bb1817a774f19545bd4df3d0d” was blocked due to MIME type mismatch (X-Content-Type-Options: nosniff).
The resource from “https://cloud.mydomain.com/apps/gallery/js/galleryutility.js?v=ae4f068bb1817a774f19545bd4df3d0d” was blocked due to MIME type mismatch (X-Content-Type-Options: nosniff).
The resource from “https://cloud.mydomain.com/apps/gallery/js/galleryfileaction.js?v=ae4f068bb1817a774f19545bd4df3d0d” was blocked due to MIME type mismatch (X-Content-Type-Options: nosniff).
The resource from “https://cloud.mydomain.com/apps/gallery/js/slideshow.js?v=ae4f068bb1817a774f19545bd4df3d0d” was blocked due to MIME type mismatch (X-Content-Type-Options: nosniff).
The resource from “https://cloud.mydomain.com/apps/gallery/js/slideshowcontrols.js?v=ae4f068bb1817a774f19545bd4df3d0d” was blocked due to MIME type mismatch (X-Content-Type-Options: nosniff).

If i disable on the .htaccess the ’ Header set X-Content-Type-Options “nosniff” ’ it starts working but with this i will make my system less safe.

What can i do to make it work with the header set?

Thanks for your help.
Nuno

2

Please post the full HTTP header responses for your JS files or a link to one. I suppose your web server is not setting the proper
mimetypes.

3

Hello Lukas,

Yes the problem is with the mimtype. But how can i post the full http header response?

Thanks,
Nuno

4

Hello? How can i see the full http header responses?