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Is it taking that long for every user and every machine? &nbsp; Any changes at all made anywhere? &nbsp; <br />
<br />
Take a look at the links in this blog (and the two I added with my comment)<br />
<br />
<a href="http://adfordummiez.com/?p=86" rel="ugc">http://adfordummiez.com/?p=86</a><br />
<br />
What is the event number....I'll see if I can find any more information.<br />
<br />
How does dcdiag look on your DCs?<br />
<br />
Thanks<br />
<br />
Mike
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Is it taking that long for every user and every machine?   Any changes at all made anywhere?  

Take a look at the links in this blog (and the two I added with my comment)

http://adfordummiez.com/?p=86 [http://adfordummiez.com/?p=86]

What is the event number....I'll see if I can find any more information.

How does dcdiag look on your DCs?

Thanks

Mike

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Please take a look at policy &quot;Always wait for the network at computer startup and logon&quot; under Computer Configuration\Administrati<wbr />ve Templates\System\Logon<br />
<br />
If enabled, disable it. <br />
refer <a href="http://support.microsoft.com/kb/305293" rel="ugc">http://support.microsoft.com/kb/305293</a><br />
<br />
You can also collect userenv logs and upload to diagnose issues issues using <a href="http://support.microsoft.com/kb/221833" rel="ugc nofollow">http://support.microsoft.com/kb/221833</a>
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Please take a look at policy "Always wait for the network at computer startup and logon" under Computer Configuration\Administrative Templates\System\Logon

If enabled, disable it.
refer http://support.microsoft.com/kb/305293 [http://support.microsoft.com/kb/305293]

You can also collect userenv logs and upload to diagnose issues issues using http://support.microsoft.com/kb/221833 [http://support.microsoft.com/kb/221833]

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Single Forest, Single Tree, Single Domain<br />
4 DC's , 2 at corporate 2 at data center, all 4 are GC and DNS<br />
Domain is in 2008R2 mode both domain/forest.<br />
<br />
Domain has been running fine for a year all of a sudden every login is taking 3 minutes. &nbsp;The only information in event viewer on the clients I can find related is :&quot;The winlogon notification subscriber &lt;Profiles&gt; is taking long time to handle the notification event &quot;<br />
<br />
DNS 'seems' fine .. replication seems fine. &nbsp;What am I missing ? &nbsp;Help ! 
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Single Forest, Single Tree, Single Domain
4 DC's , 2 at corporate 2 at data center, all 4 are GC and DNS
Domain is in 2008R2 mode both domain/forest.

Domain has been running fine for a year all of a sudden every login is taking 3 minutes.  The only information in event viewer on the clients I can find related is :"The winlogon notification subscriber <Profiles> is taking long time to handle the notification event "

DNS 'seems' fine .. replication seems fine.  What am I missing ?  Help ! 

Domain Logins very slow all of a sudden

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.