If the iSpring add-in has disappeared from your PowerPoint ribbon, you can easily bring it back in a few simple steps.
Check to see if you have downloaded the correct version of the iSpring product. You only need a 64-bit version of iSpring if your computer is running both Microsoft Windows 64-bit and Microsoft Office 64-bit.
Once you've confirmed the correct iSpring version is downloaded, follow the steps below:
- Open PowerPoint, click File and select Options.

- A new window will open. From the menu on the left, select the Add-ins tab. Then, choose Disabled Items from Manage drop-down menu and click Go.

- Choose the iSpring add-in from the list of Disabled items and click Enable.
- Close the Disabled Items window, click OK in PowerPoint Options window and restart PowerPoint.