Hello, I have freshly installed Thunderbird (on my D-drive) and the profiles (2) also are located on my D-drive (I have many mails and don't want all that on my C-drive). Almost every time, like now, I try to start Thunderbird, it just hangs (on whatever account I start it). I have the Windows blue circle and it doesn't get mails or anything. I tried to start it in safe mode, no change. I don't have any antivirus, I don't have any anti-malware. This computer is two weeks old and I am running Windows 10 Pro. The only thing that worked for me was to reinstall Thunderbird. But this is not a viable option in the long run. What can I do? Thanks in advance for your input. Regards, Cyril