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couldn't load xpcom

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Hi, i download latest firefox browser update and have a problem to load browser. I get error "couldn't load xpcom". and i don't know what to do. Please help me

Hi, i download latest firefox browser update and have a problem to load browser. I get error "couldn't load xpcom". and i don't know what to do. Please help me

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An error message like XPCOM missing or about platform version or entry points not found can happen because of a failed Firefox update that left you with a mixture of old and updated files in the Firefox installation 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.

Reinstall Firefox: