Problems using military CAC card with Catalina

There are issues when updating Catalina that could cause your to get the dreaded ERR_BAD_SSL_CLIENT_AUTH_CERT message that prevents you from accessing gov sites. The fix is pretty simple, and is laid out at militarycac.com:

https://militarycac.com/macuninstall.htm#UNPAIR

Just above the unpair section is a command line command that seems to immediately do the trick. I struggled with this for a couple of days before running across this.