This article only applies to the Windows OS. These instructions will not work with macOS.
If you need to determine which version of the Conferences i/o Windows PowerPoint Add-In is installed on your Windows PC, follow these steps after opening any PowerPoint presentation file.
1. Look for and click on the Conferences i/o ribbon.
Note: If you don't see the Conferences i/o ribbon, that the Conferences i/o Windows PowerPoint Add-In is either not installed on your computer, or the installation was damaged.
2. Look for and click on the "Help" button within the Conferences i/o ribbon. This will open a small dialog box.
3. The dialog box will say something along the lines of "Version 18.104.22.168".
When you are done with this, click "OK" to close the box.