Whenever my users was prompted to change an expiring password they got the error message 'You do not have permission to change your password'. My Domain is running in NT4 SP6a Domain and my client is in mixmode of NT4 Workstation, Win2kPro and Win98. I have been plague with this problems for the last 3 weeks. I have checked all informations in Microsoft website but there seems to be no better solutions or answer. I have also an up-to-date Anti-virus software installed across all servers and clients. Apreciate if you can guide me how to troubleshoot this problems. Thanks.