Hi @Arie_Bos — Thank you for your detailed report!
To start, may I kindly ask that you please provide a brief description of your current setup using this link as a guide.
Make sure to describe your network configuration/topology, including any networking hardware currently in use, so we can have a clear understanding of how your devices are communicating.
Additionally, can you please confirm the following:
- Have you tried rebooting your Core, Synology, and any applicable networking hardware?
- Can you please share a screenshot from Roon of Settings > Storage?
- Are there any active antivirus or firewalls on the Core machine?
Thank you!
Dylan