title: Windows 10 has caused VBA MailItem run-time error
body: <p>I have just updated to <code>Windows 10</code> and now the following <code>VBA code</code> from an Excel sheet causes a run-time error:</p>
  
  <pre><code>Dim aOutlook As Object
  
  ....
  
  Set aOutlook = CreateObject("Outlook.Application")
  Set aEmail = aOutlook.CreateItem(0)
  
  aEmail.To = "emailaddress"
  </code></pre>
  
  <p>Run-time error '-2147417851 (80010105)': 
  Method 'To' of object'_MailItem' failed</p>
  
  <p>It is the same for Excel 2003 and Excel 2013. Can anyone suggest what needs to be done to fix this?</p>