How can I solve this 🤔
See my post in profile
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 ...
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
It's already 2019 But doesn't work! Why ? ☹