While testing ppld under regular user privileges account, I had to run at the same time busTRACE to capture the generated bus activity. However, busTRACE requires administrator privileges to run, and will fail to start if you attempt to run it with the default start command with error (see photo needadministratorprivileges).
To workaround this problem you should create a shortcut to btrace.exe, open the properties of the shortcut, and hit Advanced… (see attached photo), then check Run with different credentials, launch the shortcut. When prompted for a user, choose The following user: and select a user with administrator privileges.
You are now able to run busTRACE (or busPROBE using similar technique) while logged with a regular user.