Internal enclave error. Enclave raised an exception (major = 335, minor = 52)

[kaushikdebnath]

Getting this error when I trying to Alter a column in a table to encrypt it using Always Encryption Key.
my sample query is:

ALTER TABLE [dbo].[CRM_Customers]
ALTER COLUMN [AlternatePhoneNumber] nvarchar COLLATE Latin1_General_BIN2
ENCRYPTED WITH (COLUMN_ENCRYPTION_KEY = [CEK1], ENCRYPTION_TYPE = Deterministic, ALGORITHM = 'AEAD_AES_256_CBC_HMAC_SHA_256') NULL
WITH
(ONLINE = ON);

ALTER DATABASE SCOPED CONFIGURATION CLEAR PROCEDURE_CACHE;
GO

Getting following error:

[robert_volk]

In the absence of the error log entry, there's little we can do to help you with this error. And since it mention contacting customer support, that is likely your best route.