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Firefox updated to 101.0.1 and now, when I try to open the browser, I get this error:

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  • Last reply by cor-el

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Firefox updated to 101.0.1 overnight. When I try to open the browser, I get this error message:

Error: Platform version '101.0.1' is not compatible with

minVersion >= 101.0
maxVersion <= 101.0

Not sure what to do...any and all suggestions appreciated.

Firefox updated to 101.0.1 overnight. When I try to open the browser, I get this error message: Error: Platform version '101.0.1' is not compatible with minVersion >= 101.0 maxVersion <= 101.0 Not sure what to do...any and all suggestions appreciated.

All Replies (3)

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Hi tracy.moore, See if jscher2000's response to this question can help -

In the process of updating got a weird error message and Firefox won't restart https://support.mozilla.org/en-US/questions/1380185

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this new update is terrible everything you try to open lags for ever !!!!!! slower then a snail going backwards seems the dev's really pushing users now to go to a other browser ... it has the same crappy slowness as that Google Chrome browser (1 of reasons i do not use chrome!!!) now it seems Firefox even more integrated the crap from there... ... give people when there is a update the easy reverse in case it it gives problems!!!! other hand will lose more users and the references will go from not to good anymore to bloody bad!!!!

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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.