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how to force McAfee site advisor add on in firefox. Add on disabling option to be disabled for standard user

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how to force McAfee site advisor add on in firefox. Add on disabling option to be disabled for standard user

how to force McAfee site advisor add on in firefox. Add on disabling option to be disabled for standard user

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There is an override that you can enable to allow unsigned add-ons to be enabled.

https://support.mozilla.org/en-US/kb/add-on-signing-in-firefox#w_what-can-i-do-if-firefox-disables-an-installed-unsigned-add-on

Override add-on signing (advanced users): You can override this setting by changing the xpinstall.signatures.required preference to false in the Firefox Configuration Editor (about:config typed in the URL bar). Support is not available for any changes made with the Configuration Editor so please do this at your own risk.

Note: That pref will be gone in Firefox 47, a few months down the road. So user's of currently un-signed extensions should contact the developers of those extensions and prod them into getting their act together & get their extensions signed by Mozilla.