After turning on my pc today, I clicked on the Thunderbird icon in the taskbar to open it as usual, but nothing happened. It just stays close, although the program is listed in the task manager after clicking it. I tried deinstalling and reinstalling but everytime I get the same problem. It worked fine until yesterday and I've been using Windows 10 since the beginning and have not installed a new program since yesterday. So nothing changed since the last time it opened normal. Please help me fix this as I depend on this program for my emails... Thank you!