Invoke-IcingaCheckUpdates how to setup correct permissions


I’m playing around with Icinga for Windows at the moment. I struggle with the Invoke-IcingaCheckUpdates command. It results a permission error. At the docs i found the hint:

I searched a while but can’t find any solution how to set this permission.
the Agend and Powershell service is running as “nt authority\network service” (default setting)

Do you have a hint how to set the permission for network service to be able to talk to the WU API?

Thanks and best