Why does Minecraft Realms not work?

Ch
3

I've started again Minecraft and when I click on Minecraft Realms, comes directly an error message

"an error occurred (500):"

Could Not connect to Realms: Java.security.cert.CertificateException: No subject alternative DNS name matching mooapi.minecraft.net found.

What does that mean? And how can I fix this error?

an

Are you on the latest Minecraft version?

Yesterday the 1.14.4 came out.

Ch

Have only now seen that a different version was selected, I have now downloaded the latest version and now it works.

an

No problem, I'm glad that I could help.