Windows XP and 2000 Not able to login to domain

[Elitoh]

Yesterday VM's were working fine and connecting to the domain. Today I tried to login to the domain with the same credentials and it gives me the following error. "The system cannot log you on to this domain because the system's computer account in its primary domain is missing or the password on that account is incorrect." Not sure what happend and I have tried many things to fix this. When I revert back to a snapshot it logs me in, but after a reboot it also gives me this error message. Any clues any one?

[Scissor]

Windows systems that are joined to a Domain change their machine account passwords at regular intervals (30 days by default if I remember correctly).

If you take a snapshot of a machine already joined to a domain and then continue to use the machine it may automatically change its machine account password several days later. If you then revert to the earlier snapshot the system will try to use the old password to authenticate itself to the domain and will fail. This is one cause for the error: "The system cannot log you on to this domain because the system's computer account in its primary domain is missing or the password on that account is incorrect."

At this point you will need to disjoin and rejoin the machine to the domain in order to reset the machine account password.

[Scissor]

Of course, I shouldn't jump to conclusions just because we are talking about virtual machines. Another common reason for this error could simply be that your Domain administrator disabled or deleted your system's account on the domain. The resolution is the same (remove and rejoin the machine to the domain)

[Elitoh]

I'd like to think that this error that I am getting is kind of unique cause I have also had that problem that you are describing. The error message itself is a little different, though the solution in the end is the same. The error you are talking about reads somethink like the Domain Controller can't be reached and it does have to do with the User account password changing the Solution to that is going into the registry and changing and change the "maximumpasswordage" to 3600 from 30 (3600 equaling days until password change). This is the computer system password. But anyway again I know that the solution is rejoining but is there any reason as to why this is happening.