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No comment has been added to this question in more than 21 days, so it is now classified as abandoned.<br />
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I have recommended this question be closed as follows:<br />
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Accept: Paul MacDonald (<a href="https:#a42105893" rel="ugc">https:#a42105893</a>)<br />
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seth2740<br />
Experts-Exchange Cleanup Volunteer
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No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Accept: Paul MacDonald (https:#a42105893 [https:#a42105893])

If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

seth2740
Experts-Exchange Cleanup Volunteer

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We have 3 departments with individual AD in each dept naming AD1, AD2 &amp;&nbsp;AD3. Each dept has 25-30 systems. <br />
Users in each dept login to local AD, accessing their home directory. Now planning to introduce Common AD naming ADSERVER.<br />
planning to demote all 3 ADs to child domain. Is it possible to have single user at ADSERVER which can authenticate through any of child domain?
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We have 3 departments with individual AD in each dept naming AD1, AD2 & AD3. Each dept has 25-30 systems. 
Users in each dept login to local AD, accessing their home directory. Now planning to introduce Common AD naming ADSERVER.
planning to demote all 3 ADs to child domain. Is it possible to have single user at ADSERVER which can authenticate through any of child domain?

Single signon in windows 2012 R2

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.