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FireFox Browser Integration

Manual installation of IDM plugin for Firefox and other Mozilla based browsers.
If our add-on is not available in FireFox or other Mozilla based browser, you may need to install it manually. Press FireFox options button (arrow 1 on the image) and then on "Add-ons" menu item (arrow 2 on the image).



"Add-ons Manager" window should open. Click on "Extensions" tab (arrow 1 on the image). Then press on "Tools for all add-ons" cogwheel (arrow 2 on the image), and pick "Install Add-on from File..." (arrow 3 on the image) menu item.



Then open IDM folder where you installed IDM ("C:\Program Files (x86)\Internet Download Manager\" by default).



Here you have 3 XPI files. They have the same name, but a different number at the end. Select appropriate add-on for your browser basing on FireFox version that is used in it. Please look carefully at the following:
     Select idmmzcc3.xpi for FireFox 53 and newer versions.
     Select idmmzcc2.xpi for FireFox browsers from version 27 to version 52 inclusively.
     Select idmmzcc.xpi (without a number) for FireFox versions from 1.5 to 26.

If you do not know on which version of FireFox is based your browser, try to install all these add-ons one by one.

If you selected the right version, the FireFox would show a dialog confirming setup. Depending on the version of your browser, you can see the following dialog where you need to press on "Install" button:



or the following dialog where you need to press on "Add" button:



If you selected an incorrect version of XPI file, FireFox would show an error message.

If you do not know your version of FireFox, please read here how to check it.