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how to i find out which add on is preventing firefox 54 from running multithreaded?

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about:support says

Multiprocess Windows 0/1 (Disabled by add-ons)

Without manually disabling each add on and restarting FF is there a way to find out which is the problem?

about:support says Multiprocess Windows 0/1 (Disabled by add-ons) Without manually disabling each add on and restarting FF is there a way to find out which is the problem?

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Install the Add-on Compatibility Reporter to see which add-on is preventing e10s from enabling.