Image Block Checksum Error

[uroni]

Enable internet mode by default

I see here Incremental block differences backup in Internet mode that you found how to disable it with --internet_only_mode true on either the server or the clients. You could also have blocked the client ports or put the server in its own subnetwork, or blocked the UDP broadcast packets. (For posteriority)

Specifically running "C:\Program Files\UrBackup\enable_internet_only.bat" as admin on the client is an easy solution.