Many people using older Chromecast devices experienced a shock in recent days when their units lost the ability to cast content. The company ended the brand last year, which led folks to think that this was a planned obsolescence of some kind.

Google is emailing Chromecast users today to apologize for an issue that’s been causing certain Chromecast models to fail when people try to cast to them. The company says that it’s working on a fix.

Over the weekend, 9to5Google reported that second-gen Chromecast and Chromecast Audio devices displayed an “Untrusted device” error message, preventing users from casting audio and video content onto their screens of choice.