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 latency problems in Overwatch
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 on what to do when a game update is stuck at 0 B/Ss
Troubleshooting steps to resolve voice chat problems in Overwatch