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Tks, Fix the problem by force AD re-sync again.
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Tks, Fix the problem by force AD re-sync again.

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A existing account can't be authenticated successfully but I have no idea what's wrong on it. There is no logging on the event viewer. <br />
<br />
Any idea where I can check the problem ?
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A existing account can't be authenticated successfully but I have no idea what's wrong on it. There is no logging on the event viewer. 

Any idea where I can check the problem ?

AD authentication

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.