Forum response - After 66.0.4 update Add-ons appear unsupported or disappeared

This article is no longer maintained, so its content might be out of date.

If your Add-ons are appearing as unsupported or disappeared from your about:addons page please try these steps.

Their data is not lost because it is stored locally on your profile directory. (Bug 1549129). Re-installing the add-ons will recover the data:

These fine people helped write this article:

Michele Rodaro, patrickmc
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