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Firefox update did not work, tried to install latest Firefox but got error code

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

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Firefox will not now open in Windows 10 but opens in safe mode. When I try to open in windows 10 I keep getting error code: XUL Runner Error: Platform version "88.0.1" is not compatible with minVersion > = 88.0 maxVersion > = 88.0

and Firefox does not open.

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A long as the problem is gone. Please flag your last post as Solved Problem as this can help others with similar problems.

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Sorry - went back into windows 10 and clicked on Firefox icon and it opened, so all ok now. Thanks.

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A long as the problem is gone. Please flag your last post as Solved Problem as this can help others with similar problems.

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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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