SCCM WSUS Sychn Failed

Question

SCCM WSUS Sychn Failed

Hafedh Guiga 35

Hello everyone
I'm facing an issue of WSUS Sync Manager for many weeks.
the problem is that it's failing for some attemps and then without doing any change it succeeded in the next retry and it's always the same thing each day.
The first 02, 03 or 04 attemp failed and then it secceeded.
This is what i found:
from wsyncmgr.log:
Sync failed: The underlying connection was closed: The connection was closed unexpectedly. Source: Microsoft.UpdateServices.Internal.ApiRemoting.ExecuteSPGetParentCategories
STATMSG: ID=6703 SEV=E LEV=M SOURCE="SMS Server" COMP="SMS_WSUS_SYNC_MANAGER" SITE= PID= TID= GMTDATE=mar. janv. 31 03:08:03.061 2023 ISTR0="Microsoft.UpdateServices.Internal.ApiRemoting.ExecuteSPGetParentCategories" ISTR1="The underlying connection was closed: The connection was closed unexpectedly" ISTR2="" ISTR3="" ISTR4="" ISTR5="" ISTR6="" ISTR7="" ISTR8="" ISTR9="" NUMATTRS=0 LE=0X80131509
Sync failed. Will retry in 60 minutes
from wcm.log:
Remote connection failed with exception 'System.Net.WebException: The underlying connection was closed: The connection was closed unexpectedly.~~ at Microsoft.UpdateServices.Administration.AdminProxy.CreateUpdateServer(Object[] args)~~ at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.DoSync()'. Attempting to bypass proxy
Sync failed: The underlying connection was closed: The connection was closed unexpectedly. Source: Microsoft.UpdateServices.Internal.ApiRemoting.ExecuteSPGetParentCategories
Sync failed. Will retry in 60 minutes
SCCM and WSUS are up to date with the last updates and configuration version.

If it was a proxy/FW, it'll be always blocked and i've checked the TLS 1.2 and it's OK.

Thanks in advance.

GH

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7 answers

Your answer

Answer 1

Hello ,

We are experiencing an issue with Software Update synchronization in our SCCM environment integrated with WSUS.

Environment:

SCCM installed on Windows Server 2019
WSUS configured with HTTPS (port 8531)
TLS 1.2 enabled
WSUS and SCCM SUP role are installed and running correctly
Connectivity to Microsoft Update endpoint https://sws.update.microsoft.com is successful

Issue Description: When launching a Software Update synchronization from SCCM or WSUS:

Synchronization remains at 0%
After some time, the status changes to "Cancelled" in the WSUS console
No new updates are downloaded

However, the WsyncMgr.log shows:

Sync succeeded
Done synchronizing SMS with WSUS Server
No explicit errors or SoapExceptionsHello Microsoft Support, We are experiencing an issue with Software Update synchronization in our SCCM environment integrated with WSUS. Environment:
- SCCM installed on Windows Server 2019
- WSUS configured with HTTPS (port 8531)
- TLS 1.2 enabled
- WSUS and SCCM SUP role are installed and running correctly
- Connectivity to Microsoft Update endpoint https://sws.update.microsoft.com is successful
Issue Description:
When launching a Software Update synchronization from SCCM or WSUS:
- Synchronization remains at 0%
- After some time, the status changes to "Cancelled" in the WSUS console
- No new updates are downloaded
However, the WsyncMgr.log shows:
- Sync succeeded
- Done synchronizing SMS with WSUS Server
- No explicit errors or SoapExceptions

Answer 2

TrudaZeng-MSFT 771

Hi GH,

According to the logs, it seems that SCCM can't connect to WSUS Server.

Here is a reference thread:

https://social.technet.microsoft.com/Forums/en-US/4eb8c2b5-cea3-4cf4-936d-460e64ebba61/sccm-and-wsus-not-syncing-together-8211-can8217t-update

Hafedh Guiga 35 Reputation points

2023-02-06T09:40:33.87+00:00

Hello Truda and thanks for your response,

i have checked and isn't exactly the same issue that i have.

For my it's failing one or two times and then it succeed without any intervention.

I was also checking the exit code error and the bahviour and isn't also the same.

Thanks.

GH

Answer 3

Kritika 5

Hello GH,

Can you perform the WSUS health check, i.e. make sure WSUS is working fine.

"C:\Program Files\Update Services\Tools\WsusUtil.exe" checkhealth and check the result in eventviewer. Please share the result. If WSUS is working fine. Please perform the SUSDB cleanup.

Is WSUS and SUP on same server? And check if WSUS pool is running or not.

Regards,

K

Hafedh Guiga 35 Reputation points

2023-02-03T08:20:45.41+00:00

Hello Kritika,

1- for the WSUS health check below the error:

but isn't at the same time at the fail of the sychn.

2- for the pool it's running fine, checked also in the past,

3- i'll do the cleanup of WSUS.

Thnx

GH
Kritika 5 Reputation points

2023-02-08T18:36:06.22+00:00

Hello GH,

All the VDs of WSUS should be working fine and WSUS health check should be ok. Let me know about the other errors as well apart from content directory one.

Cheers,
K
Hafedh Guiga 35 Reputation points

2023-02-09T13:02:33.66+00:00

Hello Kritika

I've already uploaded WCM and wsyncmdr.

Just let me know which log do you need.

Thanks

GH
Kritika 5 Reputation points

2023-02-14T22:51:10.4233333+00:00

WSUS and SUP are on same server? If not are you able to open the remote console of WSUS on SUP server.
Hafedh Guiga 35 Reputation points

2023-02-15T15:46:59.5233333+00:00

Hello,

They are not on the same server but i can open it from the SUP server without any issue.

GH

Answer 4

Hafedh Guiga 35

Hello,

wsyncmgr.txt

Also the wsychnmdr log file.

Regards,

GH

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Answer 5

Hafedh Guiga 35

Hello,

WCM.txt

In attached the WCM log.

Thanks.

GH

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