If none of that works something else to try is clearing the the Local App Data files.
- Press Windows key + R and type in
%localappdata%
- You should find a
Blizzard Entertainment
Folder. Open this. If you do not see it be sure you can view hidden files - Delete the Overwatch folder
- Repair the Overwatch client
- Retest
Edited by Blizzard - added a step confirmed by some players to get this fixed.