[Samba] Problem after update version 4.15.0

[Rowland Penny]

On Tue, 2021-09-28 at 20:10 +0000, Sandy via samba wrote:
> ./configure
> make
> make install

You could have hit the 'over writing an existing Samba directory can
leave behind old unwanted files' problem.

> 
> all client computers tell them that the username and password are
> incorrect, it does not let anyone log in
> 

Yes, but is there anything in the logs on the DC ???
If there isn't, try raising the log level in the DC's smb.conf.

Rowland