The connection to the server is very slow and is sometimes terminated
Check if there is an anti-virus program or a firewall is checking the HTTP communication with the server. If that is the case add an exception rule for \\progrmas\\ASA Datec Datensysteme GmbH\\ASA-AMOffice Server\\AMOService.exe. Now the service is no longer blocked by the firewall and is able to communicate with the server.