I have got the following error message when i try to connect to my Samba share:
Bad SMB2 signature for message – SAMBA Error
Solution
Via adduser i have added the Samba user. This is wrong. You add Samba users via smbpasswd -a username
After the user was added correctly via the command above, and the samba server was restarted, everything worked fine (also the login with the user)
Danke. Das hat mein Problem gelöst!