A stand-alone Microsoft Windows Server 2012 with logon as local Administrator keeps presenting itself with a popup message that the password is expired in 1 day and that you must change your password.  There were a couple of solutions that exist. One seemed more elegant and quicker than the other.

The first solution to use the local security policy. Go to Security Settings > Account Policies > Password Policy > Maximum password age.

The other solution, this simple command.

net accounts /maxpwage:unlimited

I used the simple command. The screenshot above, is actually the result of this command.

Source: https://www.bleepingcomputer.com/forums/t/565081/cannot-set-password-never-expires-server-2012/