when windows xp\vista\7 is disconnected from domain, the password is cache in the pc. i like to know when will this cache be expired?

If you want to disable cached credentials, you can use group policies to perform that. Go to ComputerConfiguration\Windows Settings\Security Options "Interactive logon: Number of previous logons to cache" and set it to 0. To get informations about cached credentials, run regedit on the client computers and check the entries in HKEY_LOCAL_MACHINE\SECURITY\Cache. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration

Hi, Thanks for posting in Microsoft TechNet Forum. As far as I know, the password would not expire, but can be overwritten. Please kindly refer to the following link: Cached credentials security in Windows Server 2003, in Windows XP, and in Windows 2000 Hope it helps. Alex Zhao TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.comPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi, I just wanted to say Hi! Did the information provided solve your query? Please do not hesitate to let me know if you have any further concerns or questions regarding the issue. Alex Zhao TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.comPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi, Thanks for posting in Microsoft TechNet Forum. As far as I know, the password would not expire, but can be overwritten. Please kindly refer to the following link: Cached credentials security in Windows Server 2003, in Windows XP, and in Windows 2000 Hope it helps. Alex Zhao TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. thaks man.