How precisely were you Backing Up - were these scheduled Backups to a shared folder hosted on the PC, or was there a separate USB or network location you’d specified?
Windows background upgrades can disable the network discovery service, making it difficult for the PC to find or be found by other devices.
Open File Explorer and select the Network icon in the navigation pane. If a message appears stating the service is off, you’ll have the option to turn it back on.
Please let us know if this helps. We’ll watch for your response and will follow up with next steps.
I have confirmed that SMB 1.0.CIFS file sharing is on, I have also verified that I can access the Roon backup directory from other computers on my network.
After numerous changes to window it seems that once turned off password protected charing and enabled file sharing for devices using 40 or 56 bit encryption that I was then able to back up to the directory.
After changing the password protected status back to on and the encryption back to 128 bit it continues to work. So I have no idea what was wrong, but it is working now.