Can no longer run certain programs

[Mark Fraser]

Going to try this again.

I am unable to run certain programs after upgrading to 17.04. For example if I 
try to run KDE Partition Manager or Kuser, my normal password doesn't work and 
I get

Permission denied.
Possibly incorrect password, please try again.
On some systems, you need to be in a special group (often: wheel) to use this 
program.

Looking at /var/log/auth.log I see this.

Jul  2 14:38:08 Rachael sudo: PAM unable to dlopen(pam_winbind.so): /lib/
security/pam_winbind.so: cannot open shared object file: No such file or 
directory
Jul  2 14:38:08 Rachael sudo: PAM adding faulty module: pam_winbind.so
Jul  2 14:38:19 Rachael sudo: PAM unable to dlopen(pam_winbind.so): /lib/
security/pam_winbind.so: cannot open shared object file: No such file or 
directory
Jul  2 14:38:19 Rachael sudo: PAM adding faulty module: pam_winbind.so
Jul  2 14:38:23 Rachael sudo: PAM unable to dlopen(pam_winbind.so): /lib/
security/pam_winbind.so: cannot open shared object file: No such file or 
directory
Jul  2 14:38:23 Rachael sudo: PAM adding faulty module: pam_winbind.so
Jul  2 14:38:25 Rachael sudo: pam_unix(sudo:auth): conversation failed
Jul  2 14:38:25 Rachael sudo: pam_unix(sudo:auth): auth could not identify 
password for [mfraser]