Outlook Today page is blank in Outlook 2016 and earlier versions

Symptoms
In Microsoft Outlook, the Outlook Today page is blank, as in the following screen shot.




Cause
This problem occurs when the Deny all add-ons unless specifically allowed in the Add-on List policy is enabled without the Outlook Today Control GUID added as an exception.
Resolution
To resolve this issue follow these steps.

Important: Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.
  1. Exit Outlook.
  2. Start Registry Editor. To do this, use one of the following procedures, as appropriate for your situation:
    • Windows 8: Press Windows Key+R to open a Run dialog box.
    • Windows 7 or Windows Vista: Click Start, and then click Run to open a Run dialog box.
    • Windows 10: Right-click or tap and hold the Start button, and then click Run to open a Run dialog box.
  3. Type regedit.exe, and then press Enter.
  4. Locate and then click the following subkey:
    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID
  5. Click Edit, and then click New String Value. Enter the following text as the value name, and then press Enter:

    {0468C085-CA5B-11D0-AF08-00609797F0E0}
  6. Double-click the {0468C085-CA5B-11D0-AF08-00609797F0E0} value. In the Value data field, enter either 1 or 2.

    1 = The specified add-on is allowed
    2 = The specified add-on is allowed and users can manage the add-on through the Add-on Manager.
  7. On the File menu, click Exit to exit Registry Editor.
Note If the registry value is located under the Policies hive, it may have been configured by Group Policy. In that case, the original value will be restored when this policy is refreshed on the computer. Your administrator must change the policy to change this setting.

More information
To update an existing policy that's configured to manage add-ins for Outlook, follow these steps:
  1. Start the Group Policy Editor.
  2. Under User Configuration, expand Administrative Templates, expand Windows Components, Internet Explorer, and Security Features.


  3. Under Add-on Management, double-click Deny all add-on unless specifically allowed in the Add-on List.
  4. Verify that the policy is Enabled, and then click OK.

    Note If this policy is notenabled, the registry data that's discussed earlier is probably being deployed to client machines by some method other than Group Policy.


  5. In the Group Policy Editor, double-click Add-on List policy.
  6. Click Enabled, and then click Show.


  7. Use the following information:

    Value name: {0468C085-CA5B-11D0-AF08-00609797F0E0}

    Value:
    1 = The specified add-on is allowed
    2 = The specified add-on is allowed and users can manage the add-on through the Add-on Manager.


  8. Click OK on remaining screens to exit.
Properties

Article ID: 3104471 - Last Review: 10/21/2015 21:16:00 - Revision: 3.0

Outlook 2016, Microsoft Outlook 2013, Microsoft Outlook 2010

  • KB3104471
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