Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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
Archived

Help! After this morning's update installed, an error message appeared that read: "XUL Runner. Platform version '6.0.2 is not compatible with miniVersion>=6.0.1 maxVersion<=6.0.1" Now Firefox won't open or respond at all. What's the fix?

cor-el replied
GBorcz

Error dialogue box appeared:

XUL Runner. Platform version '6.0.2 is not compatible with miniVersion>=6.0.1 maxVersion<=6.0.1

This happened a few minutes ago when I clicked on the Mozilla icon.

Error dialogue box appeared: XUL Runner. Platform version '6.0.2 is not compatible with miniVersion>=6.0.1 maxVersion<=6.0.1 This happened a few minutes ago when I clicked on the Mozilla icon.

All Replies (1)

If you use ZoneAlarm Extreme Security then try to disable Virtualization and do a clean reinstall.

See also: