Hello :-) I am using Thunderbird portable on windows 10 32 and 64 and had no problem up until now. But, yesterday I allowed thunderbird to update to v 68 and after that it was almost impossible to use it. Continuous crash with production of reports and reopening taht will last from seconds to minutes. Many crash also during email reading and writing that caused waste of hours of work. I tried several measures, changing from removable support to hard disk (C.\), on different directories, reinstalling previous versions and so on but nothing works. Today I updated on the new version 68.6 but the problem is not solved but get even worse and it is now impossible to have the email client open for more than a while. I manage several email accounts and for that Thunderbird is a great choice. I hope this problem can be solved quickly. Thank you for any support.