Hello there,
This behavior is caused by the permissions that are configured for the following URLs:
http://+:5985/wsman/
http://+:5986/wsman/
On the event collector computer, both the Windows Event Collector service (WecSvc) and the Windows Remote Management service (WinRM) use these URLs. However, the default access control lists (ACLs) for these URLs allow access for only the svchost process that runs WinRM. In the default configuration of Windows Server 2016, a single svchost process runs both WinRM and WecSvc. Because the process has access, both services function correctly.
This article helps fix an issue that occurs when you use source-initiated event forwarding to send events to a Microsoft Windows Server event collector. https://learn.microsoft.com/en-us/troubleshoot/windows-server/admin-development/events-not-forwarded-by-windows-server-collector
Hope this resolves your Query !!
--If the reply is helpful, please Upvote and Accept it as an answer–