Please uninstall and reinstall RealPlayer by following the steps below:
1 - First, you need to uninstall the program by following the instructions from this article: https://customer.real.com/hc/en-gb/articles/204040013
2 - After uninstalling RealPlayer from the Control Panel, please delete the application folders. Here's how: https://customer.real.com/hc/en-gb/articles/220342848
3 - Reboot your computer and reinstall RealPlayer. You can install the current version by going to: http://www.real.com/uk
If the issue persists, please let us know.