Change in TLS Certificate Detectedlink
Updated December 14, 2023
The following warning message frequently appears:
Change in TLS Certificate Detected - Revalidate
Database connectors using TLS certificate verification.
Consult your database administrator to confirm what type of certificates you are using. We recommend using self-signed certificates as these have a lifetime of five years.
If the certificates are changing frequently, it may be because you are using database-generated certificates. Database-generated certificates reset upon reboot of the database.
NOTE (SQL Server only): If you have not installed your own certificate, SQL Server will generate one each time it is started. Learn more in Microsoft's SQL Server-generated self-signed certificates documentation. Therefore, the signature that Fivetran stores will not match after a database restart. You must generate your own certificate with a utility like OpenSSL and install it to SQL Server.