"Configuring Symantec VIP with Credential Provider for offline authentication, checked need to install Python 3.6.3 but it is out of support."
Most current version of Microsoft Credential Provider plugin is 1.4, and to configure for offline authentication will require the installation of Python 3.6.3, which has reached its end-of-life.
Next iteration of MCP version 1.5 is in the pipeline, which will eliminate Python and its vulnerability/dependency.
Until then, users are to use MCP version 1.4 with supported Python 3.6.3.