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Home/ Questions/Q 911721
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Editorial Team
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Editorial Team
Asked: May 15, 20262026-05-15T17:15:31+00:00 2026-05-15T17:15:31+00:00

This blog post mentions that XPCOM components will no longer be able to observe

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This blog post mentions that XPCOM components will no longer be able to observe ‘app-startup’ notifications and they will have to listen to ‘profile-after-change’ notifications now.

My changes don’t seem to work however; any idea what I did wrong?

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  1. Editorial Team
    Editorial Team
    2026-05-15T17:15:31+00:00Added an answer on May 15, 2026 at 5:15 pm

    Add the following to chrome.manifest:

    category profile-after-change CONTRACTID CONTRACTID
    
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