The 'Altiris Deployment Service DB Management service' stops unexpectedly and the following error is returned:
Altiris Deployment Server DBManager service stopped again.
Errors seen in both the database and GSS event viewer are:
An TLS 1.2 connection request was received from a remote client application, but none of the cipher suites supported by the client application are supported by the server. The SSL connection request has failed.
An TLS 1.1 connection request was received from a remote client application, but none of the cipher suites supported by the client application are supported by the server. The SSL connection request has failed.
A fatal alert was generated and sent to the remote endpoint. This may result in termination of the connection. The TLS protocol defined fatal error code is 40. The Windows SChannel error state is 1205.
A fatal alert was generated and sent to the remote endpoint. This may result in termination of the connection. The TLS protocol defined fatal error code is 10. The Windows SChannel error state is 1203.
GSS 3.x
Cipher algorithms were not matched between the GSS Server and the SQL Server
Make sure the SQL Server and the GSS server both have the same ciphers enabled. You can check or enable all with the third-party tool IIS Crypto.
NOTE: Preferably you should enable all of them.