: Legacy behavior. Strongly discouraged and currently unsupported.
If you are seeing authentication failures or Event ID 39 in your logs, you must take action immediately: strongcertificatebindingenforcement
: Use the Microsoft Tech Community guides to identify which users or devices are still presenting "weak" certificates. : Legacy behavior
For a certificate to be considered "strongly mapped," the SAN (Subject Alternative Name) extension in the certificate must correspond exactly to an attribute on the Active Directory user object. strongcertificatebindingenforcement
