You are prompted to specify Internet Explorer when you click a link in Outlook 2010 or Outlook 2007

Symptoms

In Microsoft Outlook 2010 or Office Outlook 2007, when you click a hyperlink to a webpage, you're prompted to specify the application to open the page, as in the following screen shot.

Image displaying the

You are prompted like this even though you specified Internet Explorer as your default browser.

Cause

This problem occurs if your computer has the following configuration:

  • Windows 10
  • Internet Explorer 11 set as the default browser
  • Either Outlook 2010 or Outlook 2007
This problem occurs because data is missing from the registry.

Resolution

To fix this problem, follow these steps to add the following registry keys and data:

  1. Exit Outlook.
  2. Start Registry Editor. To do this, press the Windows key+R to open the Run window, type regedit in the Open box, and then press OK.
  3. In Registry Editor, locate and then click the following subkey:

    HKEY_CLASSES_ROOT\htmlfile\shell\opennew\command
  4. If the opennew and command registry keys don't exist, follow these steps to add them:

    • Click the following registry subkey:

      HKEY_CLASSES_ROOT\htmlfile\shell
    • On the Edit menu, point to New, and then click Key.
    • Type opennew, and then press Enter.
    • Click the opennew registry key.
    • On the Edit menu, point to New, and then click Key.
    • Type command, and then press Enter.
  5. Under command, locate and then double-click the following value:

    (Default)
  6. In the Value data box, enter the following text:

    rundll32.exe url.dll,FileProtocolHandler %1
  7. Note You will be able to work around the issue though you will see a command prompt window before the URL opens in your default browser: 
    cmd /c start "Browser" "%1".

  8. Click OK.
  9. Exit Registry Editor.

Status

Microsoft is researching this problem and will post more information in this article when the information becomes available.
Properties

Article ID: 3094186 - Last Review: Feb 5, 2017 - Revision: 4

Microsoft Outlook 2010, Microsoft Office Outlook 2007

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