Thunderbird portable does not work when moved
I am using Thunderbird Portable 78.11.00 and it is all in one folder (with its subfolders) and I copy this folder between desktop and laptop and back again when I go away. This used to work fine but now I get the Window-ID message and it will not lunch properly on the laptop.
I have tried launching in safe mode but the same problem occurs.
On the desktop it is installed on drive H: and on the laptop on drive C:
I have read some of the comments and suggestions but do not understand clearly what some experts have recommended and so am still stuck.
Thanks in advance for your help John Horrocks