How Do I Do an SQL Update From a Field on a Table Join?

I need to update tblDatabase status field to 'P' where tblnstance.Server_Name does not exist in my subquery.  I am getting an error on my table joins.

Code Below:

UPDATE tblDatabase SET tblDatabase.status = 'P'
FROM tblApplication INNER JOIN  
tblDBAppRel ON tblApplication.Application_Id = tblDBAppRel.Application_Id INNER JOIN
tblDatabase ON tblDatabase.Database_Id = tblDBAppRel.Database_Id LEFT OUTER JOIN
tblInstance ON tblDatabase.Instance_id = tblInstance.Instance_id
WHERE tblInstance.Server_Name NOT IN
               (SELECT Server_Name
                     FROM #DBWDAIInventory
                     WHERE Server_Name IN (SELECT Server_Name FROM tblMSSQLExtract)
               )
               
How do you write this query correctly?

Thanks,

Dan