This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

How do I fix the error message shown below after the update of Firefox Web Browser?

  • 1 reply
  • 0 have this problem
  • 1 view
  • Last reply by cor-el

bob.krause1
bob.krause1
more options

I am on Windows 10. I just updated my Firefox web browser and it send me an error message: "XUL Runner, Error, Platform Version 113.0.2 not compatible with min version equal or greater or lesser than 113.0.1. IS this a problem and what is the solution?? Bob Krause

I am on Windows 10. I just updated my Firefox web browser and it send me an error message: "XUL Runner, Error, Platform Version 113.0.2 not compatible with min version equal or greater or lesser than 113.0.1. IS this a problem and what is the solution?? Bob Krause

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

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.