An emergency maintenance message informs users of sudden problems that require immediate resolution. Typically, these messages include information about the nature of the problem and an estimated time to restore the system.

DartRelay 2.1 adds Microsoft Entra ID and OpenID Connect sign-in, and Relay Pass, which logs people on to Windows with a certificate so they never type a Windows password. Hosts get finer control over what happens when one person uses several devices, and the complete online documentation arrives at dartrelay.com/docs.