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Problem

Jira for Outlook does not launch and is shown as disabled in the add-in list in Outlook.

Cause

Outlook has a somewhat obscure mechanism of detecting slow add-ins. Once an add-in takes longer to launch than allowed (1 sec), Outlook will put it into a disabled state, which cannot be re-activated from the UI.

Solution - Manually enable the add-in using the Registry

1. Press WIN + R and enter "regedit" (without the quotes)
   
   
   
   
   

2. 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

   
   
   

   
   

3. Go to the "AddInLoadTimes" folder and remove the "yasoonBase" entry
   
   
   
   
   
   
4. Next, go to the "Addins\yasoonBase" folder and remove all entries from there
   
   
   
   
   
   
5. Now go to "Resiliency\CrashingAddinList" and "Resiliency\DisabledItems" and remove all entries from these folders as well.
   
   
   
   
   
   
   
6. 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
   
   
   
   
   
   
7. After the next Outlook restart, the add-in should be active again!