I have a few questions about my "Thunderbird Portable":
I have for my wife and me respectively copies on a Fritz!Box connected hard disk (NAS).
Since a Thunderbird update from 14.x.x to 45.4, the start takes up to 10 minutes and often crashes.
In addition, the address book is no longer visible in the view.
Is it possible to install a dowgrade on an earlier version?
Since few days I have in the tree view, some some nstmp- (0-5) folder and the folder structure got something mixed. Probably since one of the crashes.
How can I repair the whole again?
Thanks for Help