How can I solve this 🤔

Question

See my post in profile

Answer 1

The articles said the SSMS version needs to match the version of the server also. Did you read and tried their suggestion? the two articles have similar suggestion for solving the issue ...

Answer 2

Need to use same version of the DBMS and the management tool.

https://devsdaily.com/solved-the-backend-version-is-not-supported-to-design-databas-disgrams-or-tables/
https://stackoverflow.com/questions/25146474/the-backend-version-is-not-supported-to-design-database-diagrams-or-tables

Answer 3

It's already 2019
But doesn't work! Why ? ☹