I have a a separate version of Firefox installed from, ie. This is very frustrating, since it has my bookmarks & other settings but cannot use it and no other instance or Portable firefox installed elsewhere is usable!!. I re-started the notebook and to my surprise, I now get the error message whenever I try to start Firefox portable like I have done thousands of times before, although no one has started any instance before. I also tried another instance of Firefox portable I have at another location, same problem.
When I tried to start Firefox shortly after that, I got the error message another instance was running & I should first close it, although there was clearly none visible in the Task manager, that I should first close! I have never ever had a problem with closing Firefox or any process before via the task manager.
I was in a hurry and started with closing the Firefox instance I saw under Background processes, before going to quickly close the instances under Apps. Usually you see "Mozilla Firefox, Portable edition." under "Apps" & "Background processes" in the Taskmanager. I have the latest available version as of today, Windows 10 Home 64 bit, 8GB RAM notebook, all Windows updates installed.īecause I had many tabs + 2, 3 windows open when I started the notebook from hibernation, it was taking a bit long for it to completely "wake up", so I decided to close Firefox, which I assume was taking most memory via Taskmanager, something I have done countless times before, on this notebook. It is usually safe to disable the feature so that only one explorer process is running on the PC.I have a very annoying problem with Firefox Portable. The core reason for enabling the option is stability. You can uncheck the option to have only one Windows Explorer process running at any time on the system. If the preference is checked you have found the reason why two explorer.exe windows are running on your system. Switch to the View tab there and scroll down until you find the following preference: Launch folder windows in a separate process. Open Windows Explorer and click on Tools > Folder Options. You can check both explorer.exe files then over at services like Virus Total to check the files for malicious contents.Ī settings in the Folder Options configuration of Windows Explorer explains the existence of two explorer.exe processes. It is a good idea to check the path first, if you see a different path for one process you may have a virus problem. I'd like to point out that you need to make sure that the two explorer.exe processes, or at least one of them, is not malicious in nature.