Fix Firefox Add-Ons Disabled Due to Certificate Issue

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Firefox users noticed a problem with their browser: they couldn’t install extensions, and their existing extensions were no longer working. Mozilla says the problem is due to the expiry of the certificate and that it works to solve the problem.

The magnitude of the problem affecting Firefox add-ons seems to be quite large, as several complaints have been made about Twitter, Reddit and other social media platforms. However, it does not affect all users.

If you are one of the users affected by the last problem, you cannot install new add-ons or activate your existing add-ons using the Add-ons Manager in Firefox. The problem also affects the installation of themes in the Firefox browser.

What to do about it

Mozilla advises against using workarounds: This may keep you open to a number of security issues.

For those who use the Tor browser and have no other option, there is a workaround solution. But it’s a security risk,” said Troy Mursch, a security researcher at Bad Packets.

A patch is essentially a piece of code created as a temporary measure to fix a serious bug before the next major version of the product is due.

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In this case, Mozilla Studies – a system that the company uses to try new features and ideas before transmitting them to all Firefox users – uses them to automatically introduce a correction without the user having to do anything else.

He advises to use it “only if using another browser is not an option for the user”, he adds: “It is an acceptable risk in the short term if the user plans to reactivate the parameter’xpinstall.signatures.required’ as soon as the permanent solution is available. Otherwise, the door remains open for the installation of malicious / unreliable extensions.”

The correction will automatically be applied in the background within hours. No active steps are required for the add-ons to work again. In particular, you should not remove and/or reinstall add-ons to solve the problem. Deleting an add-on deletes all associated data, but does not disable or restart them.

Studies are actually enabled by default, but if you have already chosen not to do so, you must go to Options >> Privacy and Security >> Allow Firefox to install and run studies, then check the box.

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