weframe One requires an internet connection. This means, if there is no internet connection, it will not work. If the internet connection is disconnected during a session, an error message (the system has no internet connection) appears until the internet connection is back again. However, there is no risk to lose all data of a session, as every 30 seconds, the system automatically saves to the cloud. While being offline, local usage such as Screen Sharing and Sketching is possible, but no Notes can be send/received. After the connection is back, locally produced content will be saved.