In the wake of the latest update to Overwatch, some players on Xbox One have experienced difficulties logging into the game, instead being met with error code BC-124.
Following the update’s release, however, there seems to have been a spike in Xbox One players experiencing a log-in error with code BC-124, which prevents them from accessing the game’s servers.
Error code BC-124 means there’s a problem in the connection between your Xbox and the game servers.
While this can be caused by an issue with your own network connection, it’s also quite common for the BC-124 error to occur in the wake of an update, either to your Xbox or to Overwatch itself.
There are several potential reasons for error BC-124. Outlined below are a series of steps you can take to try to fix the issue.
The first thing to do if you encounter this error is to manually check that your Xbox is fully up-to-date. This can be done by opening the guide and going to System>Settings>Updates & downloads. The “Updates” section should show whether or not there is an update available that hasn’t already been installed.
If you haven’t already, you should also ensure that your Overwatch is also up-to-date by completely exiting the game and checking the updates queue.
If you don’t need to update your game or console, the next thing to try is a full power cycle of your home network. This should be done by turning off and unplugging both your router and your console, and leaving them for one minute before turning them back on.
The next step if you are still encountering the issue is to check your NAT Type. This can be done through your Xbox settings, and you want it to be “Open”. If it’s “Strict” or even “Moderate”, it’s worth trying to fix it by port forwarding your router. This can be done with the help of this Blizzard-endorsed port forwarding guide.
If your NAT Type wasn’t already Open, ensuring that it is will be worth doing even if you have already solved the BC-124 error, as it can have a broader impact on the quality of your matchmaking experience.
For players on a Wi-Fi connection, an unstable connection may be the cause of the issue. If you’ve followed all previous steps and are still encountering errors, try switching to a wired connection, even if only temporarily to diagnose whether the Wi-Fi connection is the source of the problem.
Finally, if you have checked your game and console are up-to-date and are sure there are no issues with your own network but are still encountering error BC-124, try unlinking and re-linking your Xbox and Blizzard accounts, which can be done on Battle.net.
In summary, the following steps should be followed to fix this error: