Occasionally, Microsoft Outlook may automatically disable any add-in or plugin that it detects potential issues with. For Highfive, this can make the add-in button disappear from your Outlook toolbar unexpectedly.

While any add-in is susceptible to this problem, you can follow the steps below to bring your Highfive button back.

Reenabling the Highfive Add-in

1. In Outlook, go to your Calendar. 
2. Click the File button in the top-left of the window.
3. Select the Info tab. 
4. Open Slow and Disabled Add-ins.
   
   
   
   
5. If Highfive is on the list of Disabled Add-ins, click the Always enable this add-in option.
   
   Don't see the HighfiveOutlookPlugin? Skip to the Reactivate the Highfive Add-in section below.
   
   
   
   

Reactivate the Highfive Add-in

Your Highfive add-in button may also disappear if Outlook deactivates it. Follow these steps to reactivate it and turn it back on.

1. In Outlook, go to your Calendar. 
2. Click the File button in the top-left of the window.
3. Select the Options tab. 
4. Select the Add-ins tab.
5. The HighfiveOutlookPlugin will appear under the Inactive Application Add-ins section. 
   
   
   
   
6. Next to the Manage: COM Add-ins dropdown, click the Go... button.
7. Locate the HighfiveOutlookPlugin and check it in. 
   
   
   
   
8. Click OK.
9. Create a new meeting to verify the Highfive add-in is now visible. (You may have to restart Outlook for your changes to take effect.)

If you still have trouble re-enabling your Highfive add-in, contact Highfive Support at help@highfive.com.