Install Lookout on Outlook 2007

Asked By 10 points N/A Posted on -


I did face a problem while I install Lookout on Outlook 2007. Can somebody guide me? I am not sure why this pop-up message comes. Please provide me a proper solution so that I can fix this issue.

Lookout failed to start

Sorry!! It looks like another Outlook Plugin has installed an unofficial version of the Outlook libraries which breaks Lookout. Lookout will not be able to load. For more information, see this link:



Answered By 0 points N/A #197994

Install Lookout on Outlook 2007



You may solve the problem by trying out these simple steps:

1. Find a copy of Lookout on here.

2. Install Lookout. 

3. When you next restart Outlook, you will get the error message that you have mentioned.

4. This is because Outlook 2007 imports the Outlook 2007 Office PIAs by default. 

5. Now open a command shell (as an administrator), and write:

  • CD  %SYSTEMROOT%assemblyGAC
  • Rename  Microsoft. Office. Interop. Outlook  Microsoft.Office.Interop.Outlook.OLD

6. Restart Outlook and the problem will be solved.

Vice versa
If this doesn’t work, restore the Interop library and undo the above command by writing:

  • rename  Microsoft.Office.Interop.Outlook.OLD  Microsoft.Office.Interop.Outlook

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