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I can confirm works for me as well.
WSUS Sync failure
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Anonymous
SBS2011
WSUS 3.2.7600.226
WSUS sync has started to fail over the last few weeks, initially intermittentl, now I cannot get it to complete at all.
Update source is Microsoft
Console error: Unable to resolve the specified upstream server name.
“WebException: The request failed with HTTP status 404: Not Found.
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)”
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at Microsoft.UpdateServices.ServerSyncWebServices.ServerSync.ServerSyncProxy.GetAuthConfig()
at Microsoft.UpdateServices.ServerSync.ServerSyncLib.InternetGetServerAuthConfig(ServerSyncProxy proxy, WebServiceCommunicationHelper webServiceHelper)
at Microsoft.UpdateServices.ServerSync.ServerSyncLib.Authenticate(AuthorizationManager authorizationManager, Boolean checkExpiration, ServerSyncProxy proxy, Cookie cookie, WebServiceCommunicationHelper webServiceHelper)
at Microsoft.UpdateServices.ServerSync.CatalogSyncAgentCore.SyncConfigUpdatesFromUSS()
at Microsoft.UpdateServices.ServerSync.CatalogSyncAgentCore.ExecuteSyncProtocol(Boolean allowRedirect)
This seems to be the key bit of the server log
2021-02-06 07:51:26.046 UTC Info w3wp.29 ClientImplementation..ctor Initializing ClientWebService ProcessID = 18412, Process Start Time = 2/6/2021 6:17:59 AM, Product Version = 3.2.7600.325
2021-02-06 07:51:26.065 UTC Info w3wp.29 AuthorizationManager.GetUpstreamServerUriHeader Found config says USS is MU site
2021-02-06 07:51:26.362 UTC Info WsusService.18 SusService.ValidateServerCertificate CheckValidationResult Succeeds: CertOK
2021-02-06 07:51:26.366 UTC Info WsusService.18 ServerCertificateValidator.IsHostAllowedException Requested host: sws1.update.microsoft.com
2021-02-06 07:51:26.367 UTC Info WsusService.18 ServerCertificateValidator.VerifyServerCertificate SSL validation succeeded.
2021-02-06 07:51:26.546 UTC Warning WsusService.18 WebServiceCommunicationHelper.ProcessWebServiceProxyException ProcessWebServiceProxyException found Exception was WebException. Action: Retry. Exception Details: System.Net.WebException: The request failed with HTTP status 404: Not Found.
So it is connecting to sws1.update.microsoft.com, and SSL validation succeeds. It fails after that with some proxy error.
(I realise that this server should be replaced, and work is in hand to migrate to Azure.)
Any help appreciated. Have been unable to fault the installation.
Thanks
Windows for business | Windows Server | User experience | Other
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Sam 71 Reputation points2021-02-09T01:43:37.167+00:00 Same issue here
WSUS Version: 3.2.7600.226
Windows Server 2008 R2 EnterpriseFailed 2021-02-04 06:56:44.560 UTC:
44.154 Info WsusService.19 SusService.ValidateServerCertificate CheckValidationResult Succeeds: CertOK
44.154 Info WsusService.19 ServerCertificateValidator.IsHostAllowedException Requested host: sws1.update.microsoft.com
44.154 Info WsusService.19 ServerCertificateValidator.VerifyServerCertificate SSL validation succeeded.
44.560 Warning WsusService.19 WebServiceCommunicationHelper.ProcessWebServiceProxyException ProcessWebServiceProxyException found Exception was WebException. Action: Retry. Exception Details: System.Net.WebException: The request failed with HTTP status 404: Not Found.<snip>
Previous day's success was at 2021-02-03 06:29:56.530 UTC
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Paul Kroitor 6 Reputation points2021-02-10T20:05:31.847+00:00 Does anyone know if simply disabling the WSUS service on SBS2011 works?
We have other WSUS servers; switching the workstations to use them would be straightforward, I imagine, but what about switching the SBS box itself over to a different update server?
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Anonymous
2021-02-10T22:19:28.313+00:00 No need to disable. Re-point clients to new WSUS Server. Delete all computers in old WSUS. Change Sync in old WSUS to Manual (no schedule). It will just tick away idly.
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Bob (ISI) 51 Reputation points2022-01-19T15:51:43.367+00:00 Good day, is anyone having the same syncing issue from back last fall? Mine has quit for about 10 days now without any changes to configuration. Message indicating the MS update servers are too busy??
If anyone has any intel, please share.
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Adam J. Marshall 11,031 Reputation points MVP2022-01-19T16:34:15.947+00:00 WSUS 3 is dead (when attempting to sync directly to Microsoft)
https://www.ajtek.ca/blog/no-more-synchronization-for-wsus-3-0-service-pack-2/
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47 answers
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Martin N 11 Reputation points2021-02-12T08:22:23.627+00:00 Works now without doing any changes. Microsoft must have fixed it on their end without acknowledging the issue. Very frustrating!
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Eduardo Recuero 81 Reputation points2021-02-12T08:18:06.43+00:00 It is working again on our side too.
Thank you for the info.Regards.
Edu -
MartinBell 31 Reputation points2021-02-12T08:02:33.597+00:00 Indeed, syncing works again; message from WSUS: “New Update Alert: The following 409 new updates have been synchronized to SERVER since Friday, February 12, 2021 3:32 AM (GMT).” Would have been nice to have some statement by Microsoft concerning this issue.
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Anonymous
2021-02-12T07:01:08.103+00:00 Interesting that it has started working again. This incident is a reminder that any cloud-based service may stop at any time, and will only resume if the supplier both can and wants to fix it. :)