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Couldn't load xpcom

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  • Last reply by cor-el

busaccnt
busaccnt
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I'm getting the error "Couldn't load XPCOM" when I try to start Firefox. This problem only started during the last Microsoft 10 update. I have completely uninstalled, including all folders and even the registry, multiple times. I still get the error. Can someone help?

I'm getting the error "Couldn't load XPCOM" when I try to start Firefox. This problem only started during the last Microsoft 10 update. I have completely uninstalled, including all folders and even the registry, multiple times. I still get the error. Can someone help?

All Replies (1)

cor-el
cor-el
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  • Top 10 Contributor
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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.