An HTTP Error occured While configuring WSUS Server

Question

I've installed WSUS on a separate machine but when I came to Windows Server Configuration Wizard
while connecting to Microsoft facing this issue.

1-Connected to the internet.
2-Tried both firewall ON/OFF.
3-Addedd inbound rule in firewall.

Pasting the screenshot below.

Answer 1

Hello

@Adam J. Marshall

Yes it is Microsoft.
I'm trying to connect to Microsoft to download the updates & after that I need to push these updates to some other systems.

Answer 2

Hi @Mohammad Zaid ,

Seem like a network related issue blocking access to the Microsoft Sites on port 80 and 443. You will need to open the below links from the server :

our first WSUS server must have outbound access to ports 80 and 443 on the following domains:

http://windowsupdate.microsoft.com

http://*.windowsupdate.microsoft.com

https://*.windowsupdate.microsoft.com

http://*.update.microsoft.com

https://*.update.microsoft.com

http://*.windowsupdate.com

http://download.windowsupdate.com

https://download.microsoft.com

http://*.download.windowsupdate.com

http://wustat.windows.com

http://ntservicepack.microsoft.com

http://go.microsoft.com

http://dl.delivery.mp.microsoft.com

https://dl.delivery.mp.microsoft.com

http://*.delivery.mp.microsoft.com

https://*.delivery.mp.microsoft.com

Important

You must configure your firewall to allow the first WSUS server to access any URL within these domains. The IP addresses associated with these domains are constantly changing, so don't try to use IP address ranges instead.

Hope this helps.

==
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Answer 3

Hello

Thank you for your question and reaching out. I can understand you are having issues related to WSUS.

It looks it can not be connected to upstream server or the connection is blocked

Clients and downstream servers that are configured to use Transport Layer Security (TLS) or HTTPS must also be configured to use a fully qualified domain name (FQDN) for their upstream WSUS server.

Please try to first Disable or Uninstall any Antivirus program or Windows firewall you may have for temporary purpose and make sure in Network also ports are not blocked.

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Answer 4

Hi
@Limitless Technology

-This WSUS server is fresh OS nothing installed no Antivirus
-& I also added ports(80,443,8530,8530) Inbound/Outbound in firewall through which its interacting.

Answer 5

Is this trying to connect to Microsoft or an upstream server? You mentioned upstream in your question.

Assuming an upstream and not Microsoft, is the upstream server using SSL (HTTPS://server.domain.local:8531)? The SSL Certificate must be trusted by the downstream server before syncing with the Upstream.

Try to download the WSUS iuident CAB file from the client machine.

http://server.domain.local:8530/selfupdate/iuident.cab
https://server.domain.local:8531/selfupdate/iuident.cab

and then try to browse to:

http://server.domain.local:8530/ClientWebService/client.asmx
https://server.domain.local:8531/ClientWebService/client.asmx

If you get SSL certificate errors, fix those (Install the root certificate into the Trusted Roots Certificates). If you can download the cab file and access the website on both HTTP and HTTPS of the upstream, then you're now good to perform the initial sync on the downstream.