With the deprecation of TLS 1.0 and 1.1, users of the Excel add-in may experience the following error:
Error connecting to CA Agile Central: The request was aborted: Could not create SSL/TLS secure channel.
Error connecting to CA Agile Central: The underlying connection was closed: An unexpected error occurred on a send
This is due to the WinHTTP protocol that Excel uses to communicate with our infrastructure to perform the query operations configured within the add-in.
WinHTTP does not use strong security in its default configuration.
The solution is to upgrade to version 2.4.4.