Hello Naresh, I was out of the office last week so I apologize for the delay. I have a couple questions regarding your problem; is it the Folder field that is showing up red on the replica server? If you browse to the path in the WSUS content store does the .cab file exist there? Is this a new replica server where this is occurring or all replica servers?
When I encountered this it definitely did end up being a certificate issue. I would check the Windows Event Viewer Application log and filter the view by Windows Server Update Services source on the replica server after performing a synchronization to see if you are getting any errors as a start.
Please let me know what you find. Also, reference my last post above to be sure server port and certificate is in right location if it is a new replica server.
When I encountered this it definitely did end up being a certificate issue. I would check the Windows Event Viewer Application log and filter the view by Windows Server Update Services source on the replica server after performing a synchronization to see if you are getting any errors as a start.
Please let me know what you find. Also, reference my last post above to be sure server port and certificate is in right location if it is a new replica server.