am using windows server 2008 and one DC. sometimes am facing problem when am trying to logon under domain. it showing that Domain Controller is not available or Password is not correct, to solve this issue i need to rejoine the PC again to domain with administrator password. again after some days the issue come back ..... plz help me to solve this Problem .

Is it always the same PC? If yes, maybe you should reinstall it. BTW. Have you cloned that PC, it can be root cause of all your problems. Have you found something interesting in event logs? Have you tried to reset the computer password from ADUC instead of rejoining to domain? With kind regards Krystian Zieja http://www.projectenvision.com Follow me on twitter My Blog Need help with your systems?

Hi Krystian, thanks for your replay, actually its not for one PC its happening randomly. i did not check the event log but i tried to change the password in ADUC but its not working also, anyway i will follow your suggestion to check event log .

Hello, let's start with an unedited ipconfig /all from the DC/DNS server and the problem machine, so we can exclude some settings. Are you using images/clones that are not prepared with sysprep?Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

Hi, This issue can be caused due to the corrupted security channel or other network connectivity issue. In addition to the suggestion provided by Meinolf Weber, please also refer to the following Microsoft KB articles for how to reset security channel. Domain Secure Channel Utility -- Nltest.exe http://support.microsoft.com/kb/158148 Resetting computer accounts in Windows http://support.microsoft.com/kb/216393 Regards,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.

Is it always the same PC? If yes, maybe you should reinstall it. BTW. Have you cloned that PC, it can be root cause of all your problems. Have you found something interesting in event logs? Have you tried to reset the computer password from ADUC instead of rejoining to domain? With kind regards Krystian Zieja http://www.projectenvision.com Follow me on twitter My Blog Need help with your systems? Hi, i checked the event log many time its OK, Nothing interesting. thanks.

Hi Weber, we are using Genuine windows server 2008 R2, all Network configurations are OK. thanks.

Hi Li, thanks for your advise, i will read these articles and revert to you .

Hi, I would like to confirm what is the current situation? If there is anything that I can do for you, please do not hesitate to let me know, and I will be happy to help. Regards,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.