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We have a 2012 R2 domain and about 200 servers. &nbsp;We use WSUS and I have one server that checked in on 4/18/2016, but has not checked in since that time. &nbsp;The server is up. &nbsp;The correct GP is applied and it was checking in before 4/18, but no longer.<br />
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The server can resolve the WSUS server and it can telnet to it on the correct port, but it's not checking in. &nbsp;I've run the wuauclt /detectnow and it's still not checking in with WSUS and WSUS shows it has not checked in.<br />
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How can I troubleshoot this more? &nbsp;I've done all I know to do, including a reboot.<br />
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Thanks<br />
<br />
Cliff
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We have a 2012 R2 domain and about 200 servers.  We use WSUS and I have one server that checked in on 4/18/2016, but has not checked in since that time.  The server is up.  The correct GP is applied and it was checking in before 4/18, but no longer.

The server can resolve the WSUS server and it can telnet to it on the correct port, but it's not checking in.  I've run the wuauclt /detectnow and it's still not checking in with WSUS and WSUS shows it has not checked in.

How can I troubleshoot this more?  I've done all I know to do, including a reboot.

Thanks

Cliff

server won't checkin with WSUS

Windows Server Update Services (WSUS), previously known as Software Update Services (SUS), is a computer program developed by Microsoft that enables administrators to manage the distribution of updates and hotfixes released for Microsoft products to computers.