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Are you running more than one DC.<br />
If so you should check the event Logs for any NTDS or other replication errors. &nbsp;There could be a replication issue.<br />
<br />
DCDIAG, NETDIAG and REPADMIN are all tools that can be used to check the current status of your Active Directory.<br />
If you find errors (Failed) in the report then you need to investigate them.<br />
<br />
DCDIAG: <a href="https://technet.microsoft.com/en-us/library/cc731968.aspx" rel="ugc">https://technet.microsoft.com/en-us/library/cc731968.aspx</a><br />
NETDIAG: <a href="https://technet.microsoft.com/en-us/library/cc731434.aspx" rel="ugc">https://technet.microsoft.com/en-us/library/cc731434.aspx</a><br />
RepAdmin: <a href="https://technet.microsoft.com/en-us/library/cc770963.aspx" rel="ugc">https://technet.microsoft.com/en-us/library/cc770963.aspx</a>
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Are you running more than one DC.
If so you should check the event Logs for any NTDS or other replication errors.  There could be a replication issue.

DCDIAG, NETDIAG and REPADMIN are all tools that can be used to check the current status of your Active Directory.
If you find errors (Failed) in the report then you need to investigate them.

DCDIAG: https://technet.microsoft.com/en-us/library/cc731968.aspx [https://technet.microsoft.com/en-us/library/cc731968.aspx]
NETDIAG: https://technet.microsoft.com/en-us/library/cc731434.aspx [https://technet.microsoft.com/en-us/library/cc731434.aspx]
RepAdmin: https://technet.microsoft.com/en-us/library/cc770963.aspx [https://technet.microsoft.com/en-us/library/cc770963.aspx]

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Hello,<br />
I have a Windows AD environment running on Windows 2008 servers. I created a user account, then deleted it, then re-added it all within about 15 minutes. When I try to log in it says &quot;no mapping between account names and security IDs was done&quot;. I am sure it is because remnants from the old account exists. Can you please point in the right direction to rectify this? Thanks in advance!
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Hello,
I have a Windows AD environment running on Windows 2008 servers. I created a user account, then deleted it, then re-added it all within about 15 minutes. When I try to log in it says "no mapping between account names and security IDs was done". I am sure it is because remnants from the old account exists. Can you please point in the right direction to rectify this? Thanks in advance!

Cannot Log In to New AD User Account

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.

Active Directory

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.