Out-of-date drivers and operating systems can cause a variety of issues, and are one of the first things to check when a game is having problems.
Troubleshooting steps for Overwatch connection problems on console.
Troubleshooting network problems in Overwatch.
Troubleshooting steps for connection problems
What to do if you can't claim a beta key for a Blizzard game.
Retail game box was purchased and is missing the game key.
How to obtain error logs for Blizzard games
Information about using an Overwatch Lootbox code won on a Facebook gaming stream.
Troubleshooting steps for disconnections in Overwatch
Troubleshooting latency problems in Overwatch