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Couldn't load XPCOM

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  • 1 has this problem
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  • Last reply by cor-el

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what to do about this error message: Firefox Couldn't load XPCOM

THIS IS REGARDING WINDOWS 11 HOME, UPDATE 107

what to do about this error message: Firefox Couldn't load XPCOM THIS IS REGARDING WINDOWS 11 HOME, UPDATE 107

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An error message about XPCOM missing or about platform version usually happens because of a failed Firefox update that left you with a mixture of old and updated files in the Firefox program folder. This can happen in case security software was keeping a handle of some of the files in the Firefox program folder preventing Firefox from replacing all the files. You need to do a clean reinstall and remove the Firefox program folder to ensure that all files are replaced. You may have to disable security software temporarily in case the problem persists.

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