[Samba] A computer in the Domain got stuck with and old username

[Rowland Penny]

On Mon, 29 Jan 2024 22:07:36 +0100
"Dr. Nicola Mingotti" <nmingotti at gmail.com> wrote:
> Done, it says what I would expect, the Domain Controller name is DC1
> 
> foo at dc1> sudo samba-tool user show nicola
> ERROR: Failed to get password for user 'nicola': Unable to find user 
> "nicola"
> 
> foo at dc1> sudo samba-tool user show nicola.mingotti
> dn: CN=nicola.mingotti,CN=Users,DC=windom,DC=borghi,DC=lan
> objectClass: top
> objectClass: person
> objectClass: organizationalPerson
> objectClass: user
> instanceType: 4
> whenCreated: 20201106233854.0Z
> uSNCreated: 5253
> objectGUID: 6d1af44b-d2e6-4719-9e31-b3d15b71f59f
> userAccountControl: 66048
> codePage: 0
> countryCode: 0
> primaryGroupID: 513
> objectSid: S-1-5-21-2112549936-2540803609-4198596461-1103
> accountExpires: 9223372036854775807
> sAMAccountType: 805306368
> lockoutTime: 0
> objectCategory: 
> CN=Person,CN=Schema,CN=Configuration,DC=windom,DC=borghi,DC=lan
> msDS-SupportedEncryptionTypes: 0
> mail: nicola.mingotti at borghigroup.it
> memberOf: CN=g-utentiUfficio,CN=Users,DC=windom,DC=borghi,DC=lan
> memberOf: CN=g-developer,CN=Users,DC=windom,DC=borghi,DC=lan
> memberOf: CN=update-WLCS,CN=Users,DC=windom,DC=borghi,DC=lan
> memberOf: CN=g-codifica,CN=Users,DC=windom,DC=borghi,DC=lan
> memberOf: CN=g-leggiTutto,CN=Users,DC=windom,DC=borghi,DC=lan
> memberOf: CN=g-controllagiri,CN=Users,DC=windom,DC=borghi,DC=lan
> memberOf: CN=g-social-media,CN=Users,DC=windom,DC=borghi,DC=lan
> memberOf: CN=g-ricerca-sviluppo,CN=Users,DC=windom,DC=borghi,DC=lan
> pwdLastSet: 133362324193280840
> userPrincipalName: nicola.mingotti at windom.borghi.lan
> displayName: Nicola Mingotti
> givenName: Nicola
> sn: Mingotti
> sAMAccountName: nicola.mingotti
> cn: nicola.mingotti
> name: nicola.mingotti
> lastLogonTimestamp: 133504325545005320
> whenChanged: 20240122212914.0Z
> uSNChanged: 164460
> lastLogon: 133510311606091920
> logonCount: 346
> distinguishedName:
> CN=nicola.mingotti,CN=Users,DC=windom,DC=borghi,DC=lan

Everything looks like it should be, so why doesn't it work on one
machine ?
It looks like it is 'cached' somewhere, which, if it was a Samba cache,
'net cache flush' should clear. I wonder if nscd is also running, this
can interfere with Samba, so if it is, stop it and ensure it doesn't
start again.

Rowland