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Issue with latest Firefox update -- Firefox no longer starts

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After Firefox updated today, the executable no longer starts. I get the following error message:

firefox.exe -- Bad Image

C:\Program Files\<mozilla firefox\gkcodecs.dll is either not designed to run on windows or it contains an error. error status 0x000000d. < p></mozilla>

And then another error message: Couldn't load XPCOM.

Please advise.

After Firefox updated today, the executable no longer starts. I get the following error message: firefox.exe -- Bad Image C:\Program Files\<Mozilla Firefox\gkcodecs.dll is either not designed to run on Windows or it contains an error. Error status 0x000000d. And then another error message: Couldn't load XPCOM. Please advise.

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I re-installed Firefox (didn't manually delete anything), and this has taken care of the problem.

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Where did you get Firefox from? For XPCOM, see if this helps. https://support.mozilla.org/en-US/questions/1229392 What OS? What version of Firefox?

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I re-installed Firefox (didn't manually delete anything), and this has taken care of the problem.