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.

Cannot get Firefox to load - getting erro message

  • 2 replies
  • 0 have this problem
  • 18 views
  • Last reply by cor-el

Ted Preston
Ted Preston
more options

will not load firefox. Error messagenreads: Error Platform Version 120.0.1 is not compatible with miniversion >= 120.0 maxiversion <= 120.0

should I just download a new file...suggestions please Thanks

will not load firefox. Error messagenreads: Error Platform Version 120.0.1 is not compatible with miniversion >= 120.0 maxiversion <= 120.0 should I just download a new file...suggestions please Thanks

All Replies (2)

TyDraniu
TyDraniu
  • Top 25 Contributor
more options
  1. Download the latest Desktop version of Firefox from this page and save the setup file to your computer.
  2. Now, go ahead and reinstall Firefox:
    1. Double-click the downloaded installation file and go through the steps of the installation wizard.
    2. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.

More information about reinstalling Firefox can be found here.

Please report back to say if this helped you!

Thank you.

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

An error message like XPCOM missing or about platform version or entry points not found can happen because of a failed Firefox update that left you with a mixture of old and updated files in the Firefox installation 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 may have to disable security software temporarily in case the problem persists.