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WSUS server issue: "This computer has not yet contacted"

Hello IT gurus

I've configured WSUS server 2016. And to test it if it's working or not, I've pointed another server to it so it gets its updates from wsus. the server is offline. but wsus server is online.
when I try to force update, it gives me error from the client side "we couldn't connect to the update service"
but I see it in the wsus server, but with an error:"This computer has not yet contacted"

Capture.PNG
notice in the photo, dhcp3 was working fine but I've stopped it. the I tried with another servers and the problem appears
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Ammar Bin YahyaVery Junior System Administrator

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Commented:
error message from dhcp1:"There were some problems installing updates, but we'll try again later. If you keep seeing this and want to search the web or contact support for information, this may help: (0x8024401c)"
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Distinguished Expert 2019

Commented:
If the server you test on is 2016 as well, it could be the WSUS bug that server 2016 had.
->2016 RTM (that is 2016 without any updates installed) could not install updates from WSUS.

Resolution: install a cumulative update (August 2016 or later) for server 2016 manually, reboot and then retry.
Ammar Bin YahyaVery Junior System Administrator

Author

Commented:
McKnife


If the server you test on is 2016 as well, it could be the WSUS bug that server 2016 had.
->2016 RTM (that is 2016 without any updates installed) could not install updates from WSUS.

Resolution: install a cumulative update (August 2016 or later) for server 2016 manually, reboot and then retry.

install it on wsus server or the client?
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Distinguished Expert 2019

Commented:
At the client.
Ammar Bin YahyaVery Junior System Administrator

Author

Commented:
but one of the client I've tried on was windows server 2012
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Distinguished Expert 2019

Commented:
2012 Server does not have a problem with WSUS.
So please retry with a different client machine.

There's really not much that can go wrong. Either the WSUS port is reachable, or not. Nothing you need to configure at the server or client to make it work.
Very Junior System Administrator
Commented:
I've just made a new WSUS server from scratch and it works fine