https://us.battle.net/support/en/article/99236
This error is caused by a conflict between Heroes of the Storm and Razer Synapse software. It only occurs if you launch Heroes of the Storm while Razer Synapse is running.
To resolve this issue, close Razer Synapse from the system tray and launch Heroes of the Storm. If you continue to receive this error, disable Razer Synapse from starting with Windows or uninstall it from your computer.