If you are encountering error code 721 on your DirecTV screen, then you need to follow the steps outlined here. Do not skip any step. Just follow the solutions all through, and hopefully, you can fix the error yourself.
As mentioned earlier, the error code 721 can show up if:
In such cases, the first thing you need to check is whether the said channel is actually not included in your channel lineup. Follow these steps to check your program package:
Now, try to run the channel and check if the issue resolves.
If you are still getting error 721 on the channel you added, then you can try refreshing the services. Several issues, including this error, can be fixed by refreshing the services.For example the DirecTV Now Error 40, which you can solve this way. But if refreshing does not work, there are other solutions too.
Sometimes, resetting your receiver can fix this DIRECTV error code 721. So, you should try this step as well, if all of the above solutions fail to resolve this error on your DIRECTV. Follow the given steps to reset your receiver:
These are the steps you need to follow to resolve error code 721 on your DIRECTV. Hope, after going through the solutions mentioned above, and implementing them accordingly, you can fix DIRECTV error code 721 by yourself.