MSI advertised shortcuts don't require a product ID.

dlls/shell32/shelllink.c

@@ -1996,6 +1996,9 @@ static LPWSTR ShellLink_GetAdvertisedArg(LPCWSTR str)
     LPCWSTR p;
     DWORD len;
 
+    if( !str )
+        return NULL;
+
     p = strchrW( str, ':' );
     if( !p )
         return NULL;
@@ -2057,8 +2060,8 @@ static HRESULT ShellLink_SetAdvertiseInfo(IShellLinkImpl *This, LPCWSTR str)
             return E_FAIL;
     }
 
-    /* we have to have at least one of these two for an advertised shortcut */
-    if( !szComponent && !szProduct )
+    /* we have to have a component for an advertised shortcut */
+    if( !szComponent )
         return E_FAIL;
 
     This->sComponent = ShellLink_GetAdvertisedArg( szComponent );