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Firefox 49 won't start after installation

OS : Windows 7 x64 I was using Firefox 48.0.2 (x64) - french version. I manually downloaded and installed Firefox 49.0 (x64). After installation, Firefox does not start :… (read more)

OS : Windows 7 x64 I was using Firefox 48.0.2 (x64) - french version. I manually downloaded and installed Firefox 49.0 (x64). After installation, Firefox does not start : - the firefox.exe process is running, using something between 5000 and 65000 Mb of memory - nothing else happens : the process does nothing, using 0% CPU

I've seen this issue : - on several PC's of my organization - after automatic update or manual update - after having deleted my Firefox profile - after having disabled Kasperky Antivirus

I've noticed that the last version of Firefox Developer Edition has the same behaviour : install OK, won't start.

Going back to previous version is OK : Firefox starts again.

Asked by assistance-multi 3 years ago

Last reply by Truckerman 3 years ago