Property Owner is not available for Database.

Sometimes when you try to open the properties dialog for a database the following error message is displayed:

“Property Owner is not available for Database ‘[<database>]’. This property may not exist for this object, or may not be retrievable due to insufficient access rights.  (Microsoft.SqlServer.Smo)”

This error happens when you are trying to access the database options and the database doesn´t have a database owner. This usually happens when the database owner user was deleted and a new database owner hasn´t been assigned to the database.

Assign a new user to the database using sp_changedbowner, for example:
use <databasename>
sp_changedbowner ‘sa’

The following query lists possible database owners that can be assigned to the database:
from sys.[databases]
inner join sys.[server_principals]
on [databases].owner_sid = [server_principals].sid

There are lots of other blogposts about this issue, here are a couple of examples:

Migrate database to a lower version

It is not supported to downgrade a Microsoft SQL Server by using the detach/attach or backup methods. However, it it possible to script data from the upgraded database and then import it into a new database in the lower version of SQL Server. A good description of this can be found on the following page: