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Disable extensions/add-ons in Firefox (3.x)

Hopefully someone out there will be able to help me

I am currently trying to set up firefox to be locked down (using lockPref) so no changes can be made to the important stuff like the proxy and downloads. I have managed to do this with no problems...however I can't seem to disable the downloading of extensions and the installation of them.

The mozilla support site mentioned xpinstall.enabled in the about:config but in version 3.6 this is not there....
Any ideas on how to disable the installation of extensions in firefox 3.x?

Thank you
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alumwell
Asked:
alumwell
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1 Solution
 
moon_blue69Commented:
Under security you can have an option warn me when sites try to add add-ons select that check box. Now you get a warning when sites are trying to put add-ons and you opt-out
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alumwellAuthor Commented:
I fount out what I needed to do

thanks for the comments but it still enabled downloads...

This is what i found out..

In the default folder of the Firefox install (C:\Program Files\Mozilla Firefox) there was a folder called "greprefs" and inside here was a javascript file called "xpinstall.js"

I set the value to false pref("xpinstall.enabled",       false);

and also added this to the lockPref file I created, now when users try to install add-ons they get a denied error.
Screen-shot-2010-11-09-at-19.46..png
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alumwellAuthor Commented:
Worked out the answer already
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moon_blue69Commented:
clever job
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