Event 15021 SSL configuration for endpoint [::]:443

Working toward going live with 11.2.300 and found this error in the event log of the server.

Event 15021, HttpEvent
An error occurred while using SSL configuration for endpoint [::]:443. The error status code is contained within the returned data. Wondering if it came over with the db copy from our live 10.2 environment.

I am not aware of anything it is affecting, yet. Running “netsh http show sslcert” came up with 2 records:
0.0.0.0:443
[::]:443

but when I look in the iis bindings, it only shows the https binding with the correct certificate
image

Can I just run “netsh http delete sslcert ipport=[::]:443” to get rid of the extra? Messing with IIS always makes me nervous.