In-Game Shop - Black Screen or Blue Box

If you are unable to see in-game shop content due to the window being black or blue, the following troubleshooting usually resolves this issue:

1. Check that your computer meets the requirements for the selected game. (World of Warcraft) (StarCraft II) (Diablo III) (Hearthstone) (Heroes of the Storm) (Overwatch). Failure to meet system requirements may cause unsatisfactory gameplay, technical issues, or an inability to launch the application.
2. If the problem is with World of Warcraft, reset your user interface to prevent conflicts with the shop window.
3. Check Parental Controls on the account to ensure that in game purchases are not blocked.
4. Issues with security software can prevent shop screens from displaying or sending information. Try troubleshooting your security applications.
5. Close background applications which may interfere with the shop displaying correctly.
6. Malware and viruses have been known to cause this issue. Run a Virus Scan as a precaution.