See Screenshot

hi, could you check in about:config that "pdfjs.disabled" is set to false?

Hi Philipp,

this option is diabled and blocked. How can i disble the block?

Thanks for your help.

Regards KLaus

if this is in a corporate environment you'd have to talk with your it department about this matter - they might intentionally disable the feature through a policy or auto-configuration... https://support.mozilla.org/en-US/products/firefox-enterprise

Hi Philipp,

Ok, i will check it if its a setting in our company.

Thanks a lot.

Regard Klaus