On October 29th, we will start distributing the new pascom Client v56.
Just like half a year ago at https://www.pascom.net/doc/en/release-notes/
announced this client will only work with pascom Server 17 and newer.
If you have a pascom Server <= 16, you should update it until 28.10. to 17 or newer.
As an interim solution you can also start all pascom Desktop Clients with the --noUpdate option,
to prevent an automatic update. See https://www.pascom.net/doc/en/clients/desktop-update/