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While attempt from VistaBizEdition to logon onto win2003 server(domain 64 bit) , quite often the message comes on this particular laptop Compaq6510b and does not logon by domain\administrator's account also. I have to reboot in safe mode and logon with domain\administrator and say system restore and boot normally with admin accounts and then logoff and login with user account. What is the cause and preventive action.
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While attempt from VistaBizEdition to logon onto win2003 server(domain 64 bit) , quite often the message comes on this particular laptop Compaq6510b and does not logon by domain\administrator's account also. I have to reboot in safe mode and logon with domain\administrator and say system restore and boot normally with admin accounts and then logoff and login with user account. What is the cause and preventive action.

Credential Manager found no valid server.

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).