When trying to connect to CA Agile Central using the Add-in for Excel version 2.43 or lower, the user is getting the following error even though the username and password are correct:
Error connecting to CA Agile Central: The underlying connection was closed: An unexpected error occurred on a send.
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The version of the Add-in for Excel is outdated and is not compatible with TLS 1.2. Learn more about the deprecation of older versions of TLS at https://communities.ca.com/docs/DOC-231181375-tls-10-and-11-deprecation-notice-v2.
Download and install the most recent version of the Add-in for Excel at https://help.rallydev.com/rally-add-excel-installation-user-guide.
Version 2.44 and above are compatible with TLS 1.2.