Netflix App Failing on X1 Cable Box

This is the second time I ran into this issue this year. Accessing the Netflix app through the X1 cable box shows a message about entering a third-party app, then returns to my cable broadcast channel instead of entering Netflix. I can access Netflix fine through the app installed in my smart TV. I can access Prime Video and other apps through the X1 box. The only way to restore the proper functioning of the X1 Netflix app is to restart the X1 box, which takes several minutes and disrupts content on other TVs. How do I fix the Netflix app to keep it working properly?