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- Press WIN + R and enter "regedit" (without the quotes)
Navigate the tree to the following location, depending on your Outlook version:
Outlook Version Path in Registry Outlook 2013 HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook Outlook 2016 HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook - Go to the "AddInLoadTimes" folder and remove the "yasoonBase" entry
- Next, go to the "Addins\yasoonBase" folder and remove all entries from there
- Now go to "Resiliency\CrashingAddinList" and "Resiliency\DisabledItems" and remove all entries from these folders as well.
- Lastly, make sure the "LoadBehavior" value under "HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins\yasoonBase" (please note, no version number!) is set to 3
- After the next Outlook restart, the add-in should be active again!