I'm regularly getting in the Event Viewer the following error message related to SIHOST.EXE :

The machine wide limit settings do not grant Local access permission to the COM Server application c:\windows\system32\sihost.exe with APPID
Unavailable to the user NT AUTHORITY\LOCAL SERVICE SID (S-1-5-19) from address LocalHost (Using LRPC) running in the application container Unavailable SID (Unavailable). This security permission can be modified using the Component Services administrative tool.

I have checked the permissions in DCOMCNFG and the defaults settings grant LOCAL SERVER all the necessary rights.

According to this message, SIHOST.EXE is a COM server but I don't see any declaration related to this server in the registry (no APPID, no CLSID,...).

Any idea ?

Thanks in advance.