An unsupported operating system was detected. Exchange Server 2016 Mailbox, and Edge Transport server roles support Windows Server 2012 R2 or later.
An unhandled exception was thrown while processing data from client IP address %1. SMTP state transitions: %2. Exception ...
An unknown error occurred while processing a request on server '{0}'. Deserialization of the exception failed. Error: {1} ...
An unknown managed default folder type for the Active Directory managed folder {0} was found while processing the mailbox ...
An unsupported operating system was detected. Exchange Server 2016 Client Access, Mailbox, and Edge Transport server roles ...
An unsupported operating system was detected. Exchange Server 2016 Mailbox, and Edge Transport server roles support Windows ...
An unsupported operating system was detected. Exchange Server 2016 Mailbox, and Edge Transport server roles support Windows ...
An unsupported operator was used in the filter. The logical Or (-or) and logical Not (-not) operators are currently not supported. ...
An unusually large amount of normal load is preventing proper operation of database '%1' ('%2'). The load on this database ...
An unusually large amount of normal load is preventing proper operation of database '%4' ('%5'). The load on this database ...