TL:DR: Check that your system clock is set correctly …and use pdbedit -u accountname -K 0 to disable expiry for the account if that’s what it’s supposed to be in the first place.

…because I just spent an hour tearing my hair out before realizing the solution.

If you’ve just created an account named accountname with sudo smbpasswd -a accountname, under what should be the default Ubuntu settings for Samba, and you can’t log into your shares, and sudo pdbedit -vu accountname looks like this…

Unix username:        accountname
NT username:          
Account Flags:        [U          ]
User SID:             S-1-5-21-4147919797-2373757126-213116460-1000
Primary Group SID:    S-1-5-21-4147919797-2373757126-213116460-513
Full Name:            Your Name
Home Directory:       \\YOURPC\accountname
HomeDir Drive:        
Logon Script:         
Profile Path:         \\YOURPC\accountname\profile
Domain:               YOURPC
Account desc:         
Munged dial:          
Logon time:           0
Logoff time:          Wed, 06 Feb 2036 15:06:39 UTC
Kickoff time:         Wed, 06 Feb 2036 15:06:39 UTC
Password last set:    Tue, 28 Sep 2088 08:03:11 UTC
Password can change:  Tue, 28 Sep 2088 08:03:11 UTC
Password must change: never
Last bad password   : 0
Bad password count  : 0

…and smbclient --user=accountname '\\YOURPC\sharename' is saying NT_STATUS_ACCOUNT_EXPIRED, do two things:

First, figure out why the heck your system clock thinks the year is 2088. Second, if you don’t want the account to ever expire, actually ask for it:

sudo pdbedit -u accountname -K 0

I was so fixated on the assumption that I had NTP time synchronization set up properly that I didn’t notice the date in this log line and went straight to investigating check_samsec.c:206:

[2088/09/28 08:31:20.028105,  1] ../../source3/auth/check_samsec.c:206(sam_account_ok)
  sam_account_ok: Account for user 'ssokolow' has expired.

…of course, it really didn’t help that, when I actually tried some suggested ways to list expired accounts, nothing showed up.

Today I learned about a weird quirk of using the “try it out without installing” mode of a Lubuntu Linux LiveUSB stick as a hacky way to turn a small form factor PC with only one hard drive bay into a temporary network-attached external drive housing.

CC BY-SA 4.0 NT_STATUS_ACCOUNT_EXPIRED by Stephan Sokolow is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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