Password expired while current TimeStamps at LastLogon and LastLogonTimeStamp

Hi,

i need new ideas to explain following problem:

a normal user account has an expired password (for 3 years now). But if i look at the LastLogon and LastLogonTimeStamp i see current Dates.

How can i work with such an account that refreshes the timestamps although the password is expired?

UAC is 0x200 -> "Normal_Account"

So..which logon types are still possible with an expired password?

Bye