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"user can use the old password for some time "<br>Are you saying that the user can continue to be logged in after you change the password or that they are able to log in with the old password after you change it?<br><br>Is the computer on the LAN with the DC when they use the old password?<br><br>
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"user can use the old password for some time "
Are you saying that the user can continue to be logged in after you change the password or that they are able to log in with the old password after you change it?

Is the computer on the LAN with the DC when they use the old password?



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I mean they are able to log in with the old password after I change it, for some time, let's say for 24 hour.<br>yes the computer is on the LAN.
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I mean they are able to log in with the old password after I change it, for some time, let's say for 24 hour.
yes the computer is on the LAN.

Very Junior System Administrator

Someone

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Yes I have multiple DCs, and are they replicate without errors. But I'm afraid that I can't restart them for now 😅<br><br>I'll check if it is related to the NTLM authentication or not
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Yes I have multiple DCs, and are they replicate without errors. But I'm afraid that I can't restart them for now 😅

I'll check if it is related to the NTLM authentication or not

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You need to set password policies in AD to remember the history of passwords and prevent reuse of passwords for the same user: Enable the 'Enforce password history'.<br>See&nbsp;<a href="https://docs.microsoft.com/en-us/windows/security/threat-protection/security-policy-settings/password-policy" rel="ugc">Password Policy (Windows 10) - Windows security | Microsoft Docs</a>&nbsp;<br><br>
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You need to set password policies in AD to remember the history of passwords and prevent reuse of passwords for the same user: Enable the 'Enforce password history'.
See Password Policy (Windows 10) - Windows security | Microsoft Docs [https://docs.microsoft.com/en-us/windows/security/threat-protection/security-policy-settings/password-policy] 



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<p>Hello IT people</p><p><br></p><p>When I change the password for a user in Active Directory, the user can use the old password for some time. How could I change that so the old password become invalid once I change it?</p>
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Hello IT people
When I change the password for a user in Active Directory, the user can use the old password for some time. How could I change that so the old password become invalid once I change it?

How to make the old password invalid once I change it in Active Directory

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

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