Outlook Error: “The Delegates settings were not saved correctly. Cannot activate send-on-behalf-of list. You do not have sufficient permission to perform this operation on this object.”

Scenario:  You receive the following error in Outlook when trying to Add/Modify Delegates within Outlook:

Error:  The Delegates settings were not saved correctly. Cannot activate send-on-behalf-of list. You do not have sufficient permission to perform this operation on this object.

Resolution: Add the IgnoreSOBError with a value of 1 in the registry.

1. Click Start, and then click Run.
2. If you are prompted for an administrator password or for confirmation, type the password or click Continue.
1. Locate and then click the following registry subkey:
   HKEY_CURRENT_USERSoftwareMicrosoftOfficex.0OutlookPreferences
   If you use policies, click the following subkey:

   HKEY_CURRENT_USERSoftwarePoliciesMicrosoftOfficex.0OutlookPreferences

   Note: x.0 in the above registry key represents your Outlook version. Please use one of the following values.
   
   Outlook 2013: 15.0
   Outlook 2010: 14.0
   Outlook 2007: 12.0
   Outlook 2003: 11.0
   

2. After you select the subkey that is specified in step 3, click New on the Edit menu, and then click DWORD Value.
3. Type IgnoreSOBError, and then press Enter.
4. Right-click IgnoreSOBError, and then click Modify.
5. In the Value data box, type 1, and then click OK.
6. On the File menu, click Exit to exit Registry Editor.