is it possible to configure wildfly/undertow to acces to a X.509 certificate located in the windows certificate store instead of a file representing the keystore, like :
<server-identities>
<ssl protocol="...">
<keystore path="name-of-the-certificate" relative-to="jboss-module-which-can-access-to-the-windows-certificate-store" keystore-password="..." alias="..." key-password="..." />
</ssl>
</server-identities>
It really depends on JVM you are running on. You need to configure security provider to one that your jvm supports to work with windows keystore. In case of Oracle JDK / OpenJDK you can find list of providers here
example of configuration could be:
<keystore provider="SunMSCAPI" path="name-of-key-in-ms-keystore" .../>
but it really depends on jvm you are running and other factors.