Difference: APPXClientEncryption (15 vs. 16)

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META TOPICPARENT	name="APPX500Features"

APPX Desktop Client Encryption

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Required - When this option is specified, the APPX Desktop Client will attempt to establish an SSL connection with the APPX Login Manager on the APPX server. If the APPX Login Manager is an older version that does not support SSL connections or if the APPX Login Manager is configured to not allow SSL connections, the client will display an error dialog informing the user that an SSL connection with the requested APPX server is not available. In this case, the user has the option of cancelling the connection request or allowing the connection to proceed without enabling SSL encryption.
Optional - This option is similar to the Required option. However, in the event that an SSL connection cannot be established, the client will automatically connect without enabling SSL and without notifying the user.

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Disabled - This option is used to specify that a "clear text" connection is desired. allowed, therefore no datastream encryption. If you are connecting to a 4.2.a or earlier build of APPX, then you might experience a brief (<=3 second) handshake upon connection.

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Disabled - This option is used to "Disable" the APPX Desktop Client's ability to establish an SSL connection. In other words, this option is used to specify that a "clear text" connection is desired. The APPX Desktop Client will first attempt to complete a 5.0 Handshake. If an appropriate response is not received within the specified SSLHandshakeTimeout, then the client will attempt to complete a Pre-5.0 Handshake. In the event that the 5.0 Handshake is completed, the client will request a "clear text" session from the APPX Login Manager. If a "clear text" session is not allowed, then, if SSLMismatchAllowed is set to True, the client will establish an SSL connection. If SSLMismatchAllowed is set to False, the client will display an Error Dialog asking the user for permission to connect with SSL instead of "clear text".

Pre43 - This option is used to specify that the Pre-5.0 Handshake protocol is to be used to initiate a "clear text" APPX Desktop Client connection with an APPX Server. If a "clear text" connection cannot be established within 5 seconds, the connection attempt will fail. This option is compatible with all versions of the APPX Login Manager including older versions such as appxdsvc.exe, winappxd, and appxd that did not have SSL capabilities.