Monday, 11 August 2014

Database diagram support objects cannot be installed because this database does not have a valid owner

TITLE: Microsoft SQL Server Management Studio
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Database diagram support objects cannot be installed because this database does not have a valid owner.  To continue, first use the Files page of the Database Properties dialog box or the ALTER AUTHORIZATION statement to set the database owner to a valid login, then add the database diagram support objects.


This error happened after an upgrade, the owner was already set as sa, so the solution was to change ownership into another login, then return it to sa.


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