1.Close Outlook 2013 if open, then navigate to C:\Program Files (x86)\Microsoft Office\Office15 and find OUTLOOK.
2.Right-click OUTLOOK and select “Run as administrator” from the drop down menu.
3.When Outlook 2013 opens click the FILE tab in the top-left corner.
4.Click Options.
5.Click Add-Ins
6.Select “Skype Meeting Add-in” and click “Remove”.
7. Open Command windows:
- Type the following command as administrator:
a. cd C:\Program Files (x86)\Microsoft Office\Office15
b. regsvr32 /u UCAddin.dll
##This will UN-REGISTER your file.
- Type the following command:
a. regsvr32 UCAddin.dll
## This will RE-REGISTER your file
9. You will see that “Lync Meeting Scheduling Add-in” appears in your list of Add-ins, and the load behavior should say “Load at Start.
10. When you go to the calendar section of Outlook you will see that the Skype Meeting option is back.
Exit and reopen Outlook normally to confirm the add-in is still working.