title: Excel viewer in SharePoint 2010 not loading Workbook
body: <p>I have added a .xlsx file to a shared documents folder in sharepoint 2010. When I click it the xlviewer.xls is loaded but it just continually shows the loading animation. I can load the file in Excel using the Edit in Microsoft Excel' option.The same happens if I use a 'Excess Web Access' web part, it just shows loading.</p>
  
  <p>I am new to sharepoint and wonder if I have a setting not turned on properly.</p>
  
  <p>TIm</p>
  
  <p>EDIT:</p>
  
  <p>here is a section from my log file</p>
  
  <blockquote>
    <p>12/02/2011 17:00:09.70    w3wp.exe (0x1564)                           0x1710  Excel Services Application      Excel Calculation Services      2026    Warning     An internal error occurred.    at Microsoft.Office.Excel.Server.MossHost.MossHost.Microsoft.Office.Excel.Server.Host.IEwaHost.IsSecureConnection()     at Microsoft.Office.Excel.WebUI.EwaCUIDataSource.EnsureDocument()     at Microsoft.Web.CommandUI.CUIDataSource.RunQuery(UIQuery query)     at Microsoft.Office.Excel.WebUI.EwaRibbon.QueryRibbonDataSource(CultureInfo uiCulture, String clientID, Boolean denormalizeImareUri)     at Microsoft.Office.Excel.WebUI.EwaStringsHandler.ProcessRequest(HttpContext context)    3ed6a78e-e010-4fe9-bf93-14b56938ed65
    12/02/2011 17:00:09.77  w3wp.exe (0x1564)                           0x1710  Excel Services Application      Browser                         f2n9    Exception   EwaStringsHandler.ProcessRequest: An unexpected exception occured. Rethrowing an HttpException so that the response is not cached by the browser. System.NullReferenceException: Object reference not set to an instance of an object.     at Microsoft.Office.Excel.Server.MossHost.MossHost.Microsoft.Office.Excel.Server.Host.IEwaHost.IsSecureConnection()     at Microsoft.Office.Excel.WebUI.EwaCUIDataSource.EnsureDocument()     at Microsoft.Web.CommandUI.CUIDataSource.RunQuery(UIQuery query)     at Microsoft.Office.Excel.WebUI.EwaRibbon.QueryRibbonDataSource(CultureInfo uiCulture, String clientID, Boolean denormalizeImareUri)     at Microsoft.Office.Excel.WebUI.EwaStringsHandler.ProcessRequest(HttpContext context)    3ed6a78e-e010-4fe9-bf93-14b56938ed65
    12/02/2011 17:00:09.77  w3wp.exe (0x1564)                           0x1710  SharePoint Server               Unified Logging Service         c91s    Monitorable Watson bucket parameters: SharePoint Server 2010, ULSException14, 5f9be61a "excel services application", 0e00129b "14.0.4763.0", f5b5c9d6 "microsoft.office.excel.server.mosshost", 0e001785 "14.0.6021.0", 4d65e5e7 "thu feb 24 05:00:23 2011", 000002d3 "000002d3", MISSING, 4a6d3421 "nullreferenceexception", 66326e39 "f2n9"   3ed6a78e-e010-4fe9-bf93-14b56938ed65
    12/02/2011 17:00:09.95  w3wp.exe (0x1564)                           0x1710  SharePoint Foundation           Runtime                         tkau    Unexpected  System.Web.HttpException: Internal error    at Microsoft.Office.Excel.WebUI.EwaStringsHandler.ProcessRequest(HttpContext context)     at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()     at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously)    3ed6a78e-e010-4fe9-bf93-14b56938ed65</p>
  </blockquote>