If you notice that the "Inova" tab has disappeared, this probably means that the add-in is disabled and/or inactive.

You can easily fix this issue by following these steps :

If the add-in is disabled

For Outlook 2016 and 2013

1. Go to Outlook > Click on the "File" tab > Choose "Info"
2. Select "Slow and Disabled Add-ins"
3. Click on "Always enable this add-in" for "InovaPushAddIn"

For Outlook 2010

1. Go to Outlook > Click on the "File" tab > Choose "Options"
2. Click on "Add-Ins"
3. Scroll down your add-ins list and check if InovaPushAddIn appears under "Disabled Application Add-ins"
4. Under "Manage", click on the drop-down, select "Disabled Items", and then click on "Go"
5. Select InovaPushAddIn from the list of disabled add-ins and click on "Enable"

If the add-in is inactive

For Outlook 2016, 2013 and 2010

1. Go to Outlook > Click on the "File" tab > Choose "Options"
2. Click on "Add-Ins"
3. Scroll down your add-ins list and check if InovaPushAddIn appears under "Inactive Application Add-ins"
4. Under "Manage", click on the drop-down, select "COM Add-ins", and then click on "Go"
5. Check the box near to InovaPushAddIn and click on "OK"

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