When attempting to check out a standard database in Database Editor, the following message appears:


[Window Title]

Estimating Database Editor


[Main Instruction]

An attempt to check out the database '[Database Name]' was made, but failed.


[Expanded Information]

The server principal "sa" is not able to access the database " '[Database Name]'" under the current security context.


See the Sage Event Viewer message log for more details.


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Checking the Trustworthy settings in SQL Server Management Studio (SSMS). 
  1. Launch SQL Server Management Studio.
  2. Right-click on the database
  3. Select Properties.
  4. Select the Options page.
  5. Find Trustworthy under the Miscellaneous section.

If the Trustworthy setting needs to change to FALSE, run this in a New Query window:


ALTER DATABASE DatabaseName  SET TRUSTWORTHY OFF


Where 'DatabaseName  ' equals the offending database.


Change Trustworthy settings to TRUE:


ALTER DATABASE DatabaseName SET TRUSTWORTHY ON; 


Where DatabaseName is the database to be changed.