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What happened? After this morning Firefox's update, I couldn't get into Firefox but got this message, "The application failed to start because it's side-by-side configuration is incorrect.

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  • Last reply by cor-el

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This morning I went to go into Firefox, a message came up stating it was updating. After the update, Firefox didn't open, so I clicked on the icon and got this message. C:\Program Files (x86) Mozilla Fire\firefox.exe. The application has failed to start because its side-by-side configuration is incorrect. I tried removing & re-installing and I even try the Window's restoration point of a couple days back and I still get the message. Has anyone had or have this problem?

This morning I went to go into Firefox, a message came up stating it was updating. After the update, Firefox didn't open, so I clicked on the icon and got this message. C:\Program Files (x86) Mozilla Fire\firefox.exe. The application has failed to start because its side-by-side configuration is incorrect. I tried removing & re-installing and I even try the Window's restoration point of a couple days back and I still get the message. Has anyone had or have this problem?

Modified by mech928

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Thank you for replying and please be patient, but I'm not familiar with this forum nor this web site. How do I get there to look up your response.

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You can click the link in my above post if you haven't done that yet.

That SxS error seems to be caused by a corrupted Visual C installation that requires some DLL files to be reinstalled.