title: Maintenance Plan Execute option is greyed out
body: <p>When I go to SQL Server Management Studio -> Management -> Maintenance Plans -> Right click on the maintenance plan that I want to execute but the option is greyed out.</p>
  
  <p><img src="https://i.stack.imgur.com/BWkMk.png" alt="enter image description here"></p>
  
  <ul>
  <li>I have checked and SQL Server Integration Services is running.</li>
  <li>I can execute other maintenance plans.</li>
  <li>I have even tried modifying this plan without an issue but Execute stays greyed out.</li>
  <li>There is no other instance of the plan running at the moment.</li>
  <li>I have also disconnected from the SQL Server and connected back but that didn't help either.</li>
  <li>SQL Agent is running.</li>
  </ul>