.PEM vs Keystore

I have a cert issued by our in-house CA (Microsoft)for KeyCloak. I created a keystore with that cert, the Root CA and the Issuing CA is also in the keystore. When I use the switch to point to the KeyStore and provide the password it does nothing on startup.

If I use the switch and point to the actual public key and .key file I do get the website but it just sits and spins.