Assumeyou have cryptographic keys from Extensible Key Management (EKM) providers in SQL Server 2019. You may notice encryption is failing when usingthese keys for column-level encryption or to encrypt other cryptographic keys.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
This issue is fixed in the following cumulative update for SQL Server:
About cumulative updates for SQL Server:
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server: