Outlook 2003 - Locally saved .oft Organizational Forms Library forms cannot be opened
Issue:
Outlook 2003, New, Form, Choose Form, from Organizational Forms Library, you pick a form and it Opens fine. You choose File, Save As, and save the form as an .oft file locally. Subsequent attempts to double-click the form from the local location result in an error "The custom form could not be opened. Outlook will use an Outlook form instead."
Fix: There are 3 HKCurrentUser keys that need to be present in order for this behavior to work correctly. However, note that Microsoft "doesn't recommend" setting these regkeys. Therefore, only set them upon request.
HKCU\Software\Microsoft\Office\11.0\Outlook\Options\Mail\ AllowMSGFilestoCreateProps DWORD value of 1
HKCU\Software\Microsoft\Office\11.0\Outlook\Options\Mail\ AllowTNEFtoCreateProps DWORD value of 0
HKCU\Software\Microsoft\Office\11.0\Outlook\Security\ AllowActiveXOneOffForms DWORD value of 2
Following setting the regkeys, a logoff/on may be required before the regkeys are valid.