We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

Wo archive tread sia. Meɖekuku bia biabia yeye ne ehia kpeɖeŋu.

FireFox5 does not start

ImmortalOneAndOnlyHeadBubba
ImmortalOneAndOnlyHeadBubba
more options

I just upgraded to version 5.0. FireFox will not load after I try to start it. I get an error message saying

Error: Platform version '5.0' not compatible with:

minVersion >= 1.9.2.16 maxVersion <= 1.9.2.16

I just upgraded to version 5.0. FireFox will not load after I try to start it. I get an error message saying Error: Platform version '5.0' not compatible with: minVersion >= 1.9.2.16 maxVersion <= 1.9.2.16

All Replies (1)

ImmortalOneAndOnlyHeadBubba
ImmortalOneAndOnlyHeadBubba Biabia la
more options

I tried to go back to version 4.0 ... same problem. Version 4 will not run either.

Same error box appears

ImmortalOneAndOnlyHeadBubba trɔe