Recently, I received an email from a friend who was experiencing issues with his small database. In order to investigate further, he granted me access to the entire database. However, when I tried to open the database diagram, I encountered the following error: “Database diagram support objects cannot be installed because this database does not have a valid owner.”
Initially, I was unsure how to resolve this error. But upon careful examination, I discovered that the error itself provided a solution. Here are the steps I followed to resolve the issue:
-- Replace YourDatabaseName in the following script
ALTER AUTHORIZATION ON DATABASE::YourDatabaseName TO sa
GO
1. Select your database and right-click on it.
2. Choose "Properties" from the context menu.
3. In the left side of the properties page, select "FILE."
4. In the "OWNER" box, click on the button with three dots (…).
5. Now, select the user 'sa' or NT AUTHORITY\SYSTEM and click "OK."By following these steps, I was able to successfully resolve the error and open the database diagram. However, it is important to note that changing the authorization can have security implications. I recommend checking your security policies before making any changes, especially on a production server where you may expose yourself to potential security compromises.
It is always important to carefully read error messages and consider the proposed solutions. In this case, the error message itself provided the necessary steps to resolve the issue. By following these steps, you can overcome the “Database diagram support objects cannot be installed” error in SQL Server.