Hallo, for some time I have the problem that Firefox won't start reliablely. In detail: After restarting my computer FF doesn't start but creates a process "firefox". When I terminate this process and try again FF starts. I read this: https://support.mozilla.org/en-US/kb/firefox-wont-start-find-solutions and used the profile manager to create a new profile. Copied bookmarks, history and passwords from the old profile to the new one. After that FF started without extensions - OK so far. But the old problem was still there: Doesn't start after restart of the computer, see above. An extension cannot be the reason as there is none after creating the new profile. Additionally I installed FF again but this didn't help either. Now I am helpless. Any advice is appreciated. FF version 39 is starting fine. Best regards - Ulrich