You can sometimes resolve problems with Horizon Client by uninstalling and reinstalling Horizon Client.
- If you have Horizon Client in iTunes on your Mac or PC, browse or search the Apps Library for the Horizon Client app and remove it.
Use the same procedure that you would use to remove any iTunes app.
- Connect your device to your computer and allow the device to synchronize with iTunes on your Mac or PC.
- If the Horizon Client app is not removed from your device, touch and hold the Horizon app icon until it wiggles and tap the X icon to delete the app.
What to do next
Reinstall Horizon Client.