Hello, I have just recently come across this problem. I have a lab of computers running Windows Vista Business Edition 32bit. All have the same software and hardware. All connected to HP 10/100/1000 Swtich. 3 out of 20 computers have experienced the "Login Requested Not Available" but only temporarily. Users can logon to windows, but cannot get to mapped drives. I have rebooted the machine and it works once again but looking for answers or a way to troubleshoot in the future. The machines have been running for 3 months logging on to the only domain we have with no problems until now. Thanks, LocalServer25

Hi LocalServer25, Thank you for the post. Before going further, please help confirm the following two questions: 1. What wasthe detailed error message when the three computers started? 2. Are these 20 computers in a workgroup or in a domain? I look forward to hearing from you. Best regards, Tim Quan Microsoft Online Community Support

Hi LocalServer25, As this thread has been quiet for a while we will be changing the issue type to Comment. If you wish to return to this question you can go ahead and change the type back to Question. Then you can edit your initial post and change the radio button at the top of the post editor window. If the issue has been resolved, wed love to hear your solution. By sharing your experience you can help other community members facing similar problems. Thanks! Best regards, Tim Quan Microsoft Online Community Support