When you try to connect Outlook to a SharePoint document library / list by clicking on the Actions Menu -> Connect to Outlook button, Outlook reports an error:
Cannot open this item. You cannot use SharePoint. Your system administrator has turned off the feature.
Check if your administrator has disabled the feature.
- Open RegEdit, start -> run -> regedit
- Navigate to, HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\12.0\Outlook\Options\WSS\Disable for Office 2007 or HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\14.0\Outlook\Options\WSS\Disable for Office 2010.
- Check if the value for ‘Disabled’ is 1 or 0. If it is 1, then your administrator has disabled the feature.
- You can override this by changing the value back to 0 and restarting Outlook, but note that if the setting is applied via group policy, it will become disabled the next time you log in or restart your computer.