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have to reset browser every time I open it to open pdf files with Adobe Acrobat.

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How can I keep the browser setting to open pdf files with Adobe Acrobat, without doing advanced customization? It works every time I reset the option, but changes to "save" for the next time. Adobe says I should switch browsers, to Chrome for example.

I used to have Acrobat as an extension, but now there doesn't seem to be an option for that. Why is this?

How can I keep the browser setting to open pdf files with Adobe Acrobat, without doing advanced customization? It works every time I reset the option, but changes to "save" for the next time. Adobe says I should switch browsers, to Chrome for example. I used to have Acrobat as an extension, but now there doesn't seem to be an option for that. Why is this?

All Replies (2)

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Hmm, your preference for how to open/save different types of download should be stable from one session to the next.

If the PDF setting was going back to the default, it would be switching to Open in Firefox, so it seems that something else may be involved. Is this happening on a computer managed by an IT department?

Regarding the Acrobat extension, it should appear on the Extensions panel if it was successfully installed into Firefox. However, if you installed Firefox after Acrobat, you probably need to do it manually. Could you try these steps:

Step 1: Locate the XPI file (the extension)

For Acrobat 2017, the extension XPI file is located here:

C:\Program Files (x86)\Adobe\Acrobat 2017\Acrobat\Browser\WCFirefoxExtn\WebExtn\signed_extn

(With DC, the bolded part probably is different, but the other part probably is the same.)

If you can find that folder and the XPI file -- for reference mine is named

adobe_acrobat-1.0-windows.xpi

-- then you can install it this way:

Step 2: Install through the Add-ons page From File

Open the Add-ons page using either:

  • Ctrl+Shift+a (Mac: Command+Shift+a)
  • "3-bar" menu button (or Tools menu) > Add-ons
  • type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click Extensions. On the right side, find the "gear" button and click that to open a menu, then click "Install Add-on From File". That menu item looks like this:

In the file browsing window that Firefox opens, select the XPI file and click Open.

Firefox should display the permission panel:

Assuming you click Add, then Firefox should display the confirmation with the option to enable the extension for private windows:

Success?

Note: As an alternative to using the Add-ons page menu item, it sometimes works to drag-and-drop the XPI file into the page area of an open tab. Less clicking if it works!

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Just for reference, the PDF setting I'm referring to is the one described in the following article: View PDF files in Firefox or choose another viewer.

Also, if a site sends a Content-Disposition: attachment header to Firefox, then Firefox will always show the Download dialog (with Open and Save options) instead of following the automatic handling rules.