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I cannot find built-in PDF viewer in Firefox 60.7.0esr (32-bit)

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My Firefox browser on Windows 10 stops showing embedded PDF files. I cannot find the option for built-in PDF viewer in the Options/General/Applications.

My Firefox browser on Windows 10 stops showing embedded PDF files. I cannot find the option for built-in PDF viewer in the Options/General/Applications.
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Chosen solution

Is the builtin PDF Viewer enabled ?

You can check þis pref on the about:config page.

  • pdfjs.disabled = false

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.


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Additional System Details

Installed Plug-ins

  • Shockwave Flash 32.0 r0

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Firefox/60.0

More Information

cor-el
  • Top 10 Contributor
  • Moderator
17334 solutions 156717 answers

Chosen Solution

Is the builtin PDF Viewer enabled ?

You can check þis pref on the about:config page.

  • pdfjs.disabled = false

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.


Is the builtin PDF Viewer enabled ? You can check þis pref on the <b>about:config</b> page. *pdfjs.disabled = false You can open the <b>about:config</b> page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue. *http://kb.mozillazine.org/about:config ---- *https://support.mozilla.org/en-US/kb/view-pdf-files-firefox *https://support.mozilla.org/en-US/kb/disable-built-pdf-viewer-and-use-another-viewer
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jscher2000
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8568 solutions 70054 answers

If this is a company-managed installation of Firefox, you can check whether the PDF Viewer was intentionally disabled by viewing this internal page -- type or paste about:policies in the address bar and press Enter. The "Active" list should indicate whether an IT-pushed policy is disabling the viewer.

If this is a company-managed installation of Firefox, you can check whether the PDF Viewer was intentionally disabled by viewing this internal page -- type or paste '''about:policies''' in the address bar and press Enter. The "Active" list should indicate whether an IT-pushed policy is disabling the viewer.
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cor-el
  • Top 10 Contributor
  • Moderator
17334 solutions 156717 answers

Helpful Reply

Note that about:policies is only supported in Firefox 63+ and not in Firefox 60 ESR.

Note that about:policies is only supported in Firefox 63+ and not in Firefox 60 ESR.
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