Running Windows XP, firefox automatically updates, no update since last open, what appears to be a windows error message "Could not find the mozilla run time"
Firefox does not start. What appears to be a Windows XP message comes up: "Could not find Mozilla runtime." Firefox automatically updates. No update since last firefox ran earlier in the day. Nothing appears to have changed.
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Have you tried installing Firefox from a full installer? That might work better. https://www.mozilla.org/en-US/firefox/all/
The same thing just happened to me on Win 7
I closed firefox. Then I tried to open firefox, a small update style window showed up, with a progress bar, for a second or two. Then it showed an error box "Could not find the mozilla run time", and wouldn't load firefox.
After that, any time I try to launch firefox, all I get is "Could not find the mozilla run time"
I had to use IE to download firefox and install it again to fix this.
I wonder what is up with this? A bug?
- 1 Download Firefox For All languages And Systems v43* {web link}
- 2 Uninstall Firefox from your computer {web link}
DO NOT remove your profiles. - 3 After, reboot the computer. Then run the full installer.