Since upgrading to OS 10 El Capitan, I have encountered a bug where the App. Store is not responsive to VO when launched. For example, when checking for software updates using Menu>About>Software Update, the App Store opens but cannot be navigated with VO. The only workaround I found was to re-start Voiceover while in the App Store. I have reported this to Apple.
Comments
App Store Bug in OS X 10.11
I found the same bug and followed the same procedure of turning off VO then turning it back on again. Also reported it to Apple. Wish they would be more thorough before releasing these upgrades. I rolled back my system to Yosemite, I was so disgusted. My advice: Wait a while before going to El Capitan. As someone once told me, "Never get Version 1.0 of anything."
Actually there is another
Actually there is another work around after hitting command plus numrow 5 to get to updates. Just navigate away from and back to the app store. No need to restart vo.