Happily used Firefox for 2 years, suddenly it won't open - getting this error message: "Platform Version incompatible with minversion >=1.9.1.11 maxversion <=1.9.1.11" What can I do?
Before this happened, I was having a problem for about a month where Firefox wouldn't close. I'd close the browser window, and later when I tried to reopen it to connect to the Internet, I 'd get a msg saying that Firefox is already running, and I must close the current window before opening a new one. I'd have to restart my computer at this point. I don't know if this is related to why I can no longer use Firefox at all.
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The "Platform version incompatible" error message can be caused by a problem with the installation of Firefox. Remove your current installation of Firefox and re-install.
- Delete all the files and folders inside the Firefox installation directory - C:\Program Files\Mozilla Firefox\
- Download the latest installer from Mozilla and install it.
Doing the above will not remove your bookmarks, passwords etc, since they are stored in a separate folder.
If after re-installing you get the "already running" error, see "Firefox is already running but is not responding" error - How to fix.
由 TonyE 於 修改