Mozilla Firefox since v127.0 cannot install anymore the Adobe Acrobat Pro .xpi extension

Report · Oct 02, 2024

Few years back, whenever we install the Adobe Acrobat Pro software on our PCs, he imediatelly emerged into Mozilla Firefox web browser also.

We did not need to do simply anything here, it was just there, you can see it right away as a nice Adobe Acrobat button on the ribbon of the Mozilla firefox web browser, and it works just out-of-the-box, most superbly, easy and nice. 🙂

Somewhow, this quite logic for simply everbody and a great way of function disapear in last few years... 😞

Because now, everbody who needs Adobe Acrobat Pro extension in a Mozilla Firefox web browser need to do a manual magic to be able to install it in the first place, by importing and installing the adobe_acrobat-1.0-windows.xpi extension file into a Mozilla Firefox web browser.

However, since Mozilla Firefox web browser v127.0 (released June 11 2024), the same manual installation of this Adobe Acrobat Pro extension (the adobe_acrobat-1.0-windows.xpi file) do not work anymore! 😞

So, when you go in any higher version of Mozilla Firefox web browser then v126.0.1 (released May 28, 2024) to this web browser Menu Bar -> Tools -> Add-ons and Themes -> Extensions -> Install Add-on From File..., and then try to manually import-install the Adobe Acrobat Pro extension (the adobe_acrobat-1.0-windows.xpi file) into the Mozilla Firefox web browser, and from this HDD location:

C:\Program Files (x86)\Adobe\Acrobat DC\Acrobat\Browser\WCFirefoxExtn\WebExtn\signed_extn\adobe_acrobat-1.0-windows.xpi

The Mozilla Firefox web browser will say during this .xpi file installation: "This add on could not be installed because it appears to be corrupt"! 😞

However, in any Mozilla Firefox web browser version prior v127.0 (released June 11 2024), this manuall import-installation of the adobe_acrobat-1.0-windows.xpi file will be most sucessfully installed in a Mozilla Firefox web browser without any problem!

I also create the most detailed and step-by-step post on the Mozilla Forum about all of this problem:

https://forums.mozillazine.org/viewtopic.php?t=3125449

I write it to be helpfull on both sides here (the Mozilla and the Adobe Corp. side), to fix this months long problem by now, as this is on mutual interest of both of just mentioned sides here, including the users, of course.

So, please be aware of this bug issue that is even present in all brand new and up-to-date Adobe Acrobat Pro v2024.003.20112, take a look, and please, please fix it.

Thank you in advance for all the help and advices and best regards!

Report · Oct 02, 2024

In the meantime I also post all this even here:

https://acrobat.uservoice.com/forums/590923-acrobat-for-windows-and-mac/suggestions/48914657-mozilla...

Report · Oct 03, 2024

To sum of my findings from my last post here, the culprit problemo why we cannot anymore directly install the Adobe Acrobat Pro extension (the adobe_acrobat-1.0-windows.xpi file) into Mozilla Firefox web browser, is the most probably in this one here...:

https://support.mozilla.org/en-US/questions/1466884#answer-1679092

https://discourse.mozilla.org/t/upgraded-add-on-signatures/129599

https://blog.mozilla.org/addons/2019/10/31/firefox-to-discontinue-sideloaded-extensions/

So, respectfully the Adobe Corp. need to fix all this on some other way, because "Sideloading" of extensions within Mozilla Firefox web browser is not allowed anymore by the Mozilla Foundation, and they clearly and publicly warn everbody that this will happen, even in 2019!

With that said, also some other web browsers are hit with this Adobe Acrobat Pro extension problem too, especially ones based also on Firefox... 😞

And with that even said, converting of the Web pages within a web browser to an Interactive PDF file format is one of the major reasons why mass amount of people Worldwide uses the Adobe Acrobat Pro software in the first place...

So, Adobe Corp. please fix all this!