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WSUS Synchronizing issue

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Wednesday, July 10, 2019 3:45 AM

WSUS Synchronizing issue between upstream and downstream in Windows server 2012 R2 Standard. After 10% completion getting fail message and status shows Idle, if I change  Synchronizing from Microsoft update that works.

Please help with this, need to check any settings problem.

All replies (4)

Wednesday, July 10, 2019 6:35 AM

Hi,
  

According to your description, please refer to the following steps for troubleshooting:
  

  1. Make sure you are using the correct name for the upstream WSUS server and that you have spelled it correctly. To determine if there is a problem with network name resolution services, use the ping command from the downstream WSUS server that cannot synchronize.
      
  2. The firewall on the WSUS server is configured to allow inbound traffic on HTTP port 8530 and HTTPS port 8531.
      
  3. If the BITS service was disabled during synchronization, synchronization will fail. To ensure that the BITS services is properly enabled, restart both the BITS service and the WSUS service.
      
  4. If a synchronization has failed, in the WSUS administration console, go to the Synchronizations node, and in the middle pane select the failed synchronization. 
      

       

Reply back with the results would be happy to help.
  

Regards,
Yic

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If you have feedback for TechNet Subscriber Support, contact [email protected].

Wednesday, July 10, 2019 4:35 PM

upstream name mentioned correctly 

firewall configured and inbound traffic allowed both the ports 

Bits service already enabled.

Please  find attached image, few places new updates are downloaded, it works only 10 to 11% then goes ideal with error

Friday, July 12, 2019 2:25 AM

Hi,
  

The following two steps may help you:
  

  1. Make sure that this WSUS downstream server has KB2919355 and KB3159706 installed. Or have installed the latest monthly rollup update.
      
  2. Please refer to the contents mentioned in this thread, check if the port communication is open normally, and try to increase the private memory limit of the WSUS application pool: "WSUS Sync failing on SUP Replica."
      

Reply back with the results would be happy to help.
  

Regards,
Yic

Please remember to mark as answers if they help.
If you have feedback for TechNet Subscriber Support, contact [email protected].

Friday, July 19, 2019 7:29 AM

Hi,
 

Any update is welcome here.
If the issue is resolved, share your solution or find the helpful response "Mark as Answer" to help other community members find the answer.
 

Thank you for your cooperation, as always.
 

Regards,
Yic

Please remember to mark as answers if they help.
If you have feedback for TechNet Subscriber Support, contact [email protected].