Error code XRE-03121

Common solutions

1. Ensure all TV connections are tight, if applicable.
2. Perform a System Refresh with the following steps:
   • Into your Xfinity Voice Remote, say “Refresh” or “System Refresh.”
   • Power cycle the TV Box by unplugging it for 1-2 minutes and then plug it back in.

Next steps

@user_ncxv6c 

https://www.xfinity.com/support/articles/x1-errorcode-xre-03121