I cannot find built-in PDF viewer in Firefox 60.7.0esr (32-bit)
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.
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.
- 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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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.
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.
Note that about:policies is only supported in Firefox 63+ and not in Firefox 60 ESR.