good

All works great!
BUT! After release Firefox 60 with support Group Policy, in our enterprise intranet we install Firefox how default web browser, and for run clickonce application we use this plugin... By group policy now we can install plugin automate... but... when this plugin install him automatically open nativeinstall.html and try to save .exe file

Can you create 2nd version of this plugin for "silent" install, e.g. plugin without html help and .dat (exe) file.
Exe file we install separattely by group policy windows.

I try to just cut off some file from xpi, and change some file for skip help files and saving exe files, but firefox don't install my new .xpi... I think because him not signatures

Thanks for this. I use ClickOnce and was fed up having to use Chrome - now I can go back to using my preferred browser. Thanks again.

Thanks for doing the job that Microsoft should have. Working as well as your Chrome version, thanks.