title: SQL Server Express CREATE DATABASE permission denied in database 'master'
body: <p>After I change the option as UserInstance="False", then the error starts to happen.</p>
  
  <p>Because I want to use full-text search, the option change is required. BUT, it stopped to work. Is there any way to make it work again? </p>
  
  <p>I'm running Application Pool as Network Service with full control.</p>