Why does Thunderbird think it is already running?

I get the same message for Firefox and several other programs. I open Task Manager and go to the tab that says processes. I find that there are several instances of Firefox running in the background and I cause them to close with Task Manager. Then I open one instance and that solves the problem. Haven't figured out yet how I get more than one instance of Firefox or other programs running

thegaffer
July 2008

If you have your profile in a shared folder on a network drive and launch Thunderbird immediately after starting your PC, you may need to open Explorer to make a connection to the shared folder before you launch Thunderbird.

So, if you see this error, close the Thunderbird error message, open Explorer and navigate to the drive which contains the shared folder, then try launching Thunderbird again. This works for me. It seems that Thunderbird can't start the first connection to a shared folder on a network drive.

Tim Winch
November 2007