Important information for customers using hosted or on-premise Microsoft Exchange Server and the SuperOffice Calendar Synchronizer, called the
...
Synchronizer.
** Please forward this article to your system administrator if you are not the IT responsible for your organization **
...
Since the update of the 21st of August 2019 the Nebula Synchronizer is unable to connect anymore to on-premise or hosted Exchange Servers running on Windows Server versions that do not support TLS 1.2 or do not have this feature enabled. Resulting that calendar synchronization is halted.
...