Users are receiving the following error message when they try to open iCloud appointments synced to classic Outlook.
To help prevent malicious code from running, one or more objects in this form were not loaded.
The initial recommended fix was to change the ActiveX settings in Word’s Trust Center: In Word, open File\Options\Trust Center\Trust Center Settings\ActiveX Settings. Select “Enable all controls without restrictions and without prompting (not recommended; potentially dangerous controls can run) controls”. Also enable “Safe mode (helps limit the control’s access to your computer)”.
Changing that setting could leave the user at risk if they opened an infected document.
Instead of changing that setting, you can try editing the registry, removing Apple subkeys in two registry keys.
Disable the iCloud add-in in Outlook and close Outlook or sign out of the iCloud add-in, which removes it from Outlook.
Then open the registry editor (start typing registry editor on the start menu, open it when it comes up).
Browse to HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\FormRegions
Here you might find the following subkeys. If so, right-click on each and choose Delete.
Apple.DAV.Appointment
Apple.DAV.Contact
Apple.DAV.Task
Next browse to
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Outlook\Addins
Delete the Apple.DAV.Addin subkey and any other Apple.Dav subkeys that might be there.
Rebooting may not be necessary but is recommended. Then either enable the iCloud add-in or sign back into iCloud.
