title: Links failed to refresh in Excel. PowerPivot data has failed to refresh
body: <p>I have a large Excel file with links and tables that take information from an Access database and format it so that a Power Point can pull the charts. Everytime I click refresh all to refresh all the Access Queries I get an error that says:</p>
  
  <blockquote>
    <p>Initialization of the data source failed.</p>
    
    <p>Check the database server or contact your database administrator. Make sure the external Database is available, and then try the operation again. If you see this message again, create a new data source to connect to the object.</p>
  </blockquote>
  
  <p>I then click OK and a new message box pops up that reads:</p>
  
  <blockquote>
    <p>A PivotTable, cube function or slicer using the connection "PowerPivot Data" has failed to refresh. Continue to refresh all?</p>
  </blockquote>
  
  <p>I click yes and the rest of the file refreshes. When I investigate further to the PowerPivot Data connection it's description reads:</p>
  
  <blockquote>
    <p>This connection is used by Excel for communicatoin between the workbook and embedded PowerPivot data, and should not be manually edited or deleted.</p>
  </blockquote>
  
  <p>How should I procede? I cant find any power pivot data but I did not create this file. I have been told to resolve this error but am not sure what I can do.</p>
  
  <p>Your help is greatly appreciated, thank you.</p>