Client can't ping the WSUS server

Question

Domain Environment:
1 Domain: Qasim.local
2 Sites: Vancouver& Provost

3 Clients

2 Clients in Vancouver

1 Clients in provost

diagram in environment:

Note: clients not added

WSUS Servers are deployed for updates to push to clients / Computers etc.

The client in provost can't ping the wsus server that is set in provost

the wsus server set in provost is there to use it as updates in provost clients computer.
I checked the firewall their configured.

I have DHCP set in the site 1 and site 2 however my dhcp for site 2 doesn't work. Hence, my client that is in provost is set to static ip:

192.168.110.50
DG: 192.168.110.254
Using a vyos router vm for the network connection.

All on VMs, like DC's in site 1 is server 2019 so on so forth.

I have setup GPO to apply automatic update but only target to the provost pc (site 2).

DNS is running and DHCP.

Not sure what is wrong. As mentioned spend hours to troubleshoot.

Answer 1

I'd check that all members got the domain firewall profile. Try to ping the gateway, try to tracert to see where the connection is dropped. An unedited ipconfig /all of problem member, domain controller and the WSUS might help.

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--please don't forget to upvote and Accept as answer if the reply is helpful--

Answer 2

Hi. Thank you for your question and reaching out. I’d be more than happy to help you with your query

I have linked an article below that may help solve your issue. Here is what the article has to say:

If the WSUS server is unreachable from the client, the most likely causes include: There's a name resolution issue on the client. There's a network-related issue, such as a proxy configuration issue.

Use standard troubleshooting procedures to verify name resolution is working on the network. If name resolution is working, the next step is to check for proxy issues. Check windowsupdate.log (C:\windows) to see if there are any proxy related errors. You can run the proxycfg command to check the WinHTTP proxy settings.

If there are proxy errors, go to Internet Explorer > Tools > Connections > LAN Settings, configure the correct proxy, and then make sure you can access the WSUS URL specified.

Once done, you can copy these user proxy settings to the WinHTTP proxy settings by using the proxycfg -u command. After the proxy settings are specified, run wuauclt /detectnow from a Command Prompt and check windowsupdate.log

REFERENCE: https://learn.microsoft.com/en-us/troubleshoot/mem/configmgr/update-management/troubleshoot-issues-with-wsus-client-agents

If the reply was helpful, please don’t forget to upvote or accept as answer, thank you.