Right-click the Security key, select New, and then select DWORD Value. On the Edit menu, point to New, and then select Key.Select the registry key: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\15.0\Outlook.If a Security registry key does not exist, create a new key. Locate the registry key: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\15.0\Outlook\Security. Select Start, select Run, type regedit in the Open box, and then select OK. Microsoft cannot guarantee that these problems can be solved. These problems might require that you reinstall the operating system.
Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method.
