I am not able to open Mozilla Firefox.

There is not much to say. Mozilla Firefox will not open on my computer. Nothing happens. It used to work fine but recently it has been getting harder and harder to open and now it won't open at all anymore. I even removed an older version and downloaded the new version and nothing happens.

Hello,
Please see the support article below for full information on viewing PDF in Firefox:
[[View PDF files in Firefox without downloading them]]
If you want to use Firefox's built in PDF viewer (i.e. not a plugin) then you will need to ensure that any PDF plugins are uninstalled from Firefox and that 'Preview in Firefox' is selected as the Action for PDF files (see screenshot below).
I hope that helps. Let me know if not.

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