You may already know that for quite some time there has been a new Azure security feature in preview called Azure AD Password Protection to help protect you against password based attacks and restrict the usage of bad/too well known password (see https://t.co/PnWZiWbWic)
Well, the feature is now generally available.
If you have been using it during the preview to also protect your on-premises AD you have to ensure you are running the latest agent (available here https://aka.ms/downloadaadpp – version 1.2.125.0), or at least version 1.2.116.0 as older version will stop working after July 1st.