Hello,
I am developing a video streaming service that uses FairPlay. Since around February 20th, we have started receiving reports of CoreMediaErrorDomain -42709 errors.
Unfortunately, there is no documentation from Apple that explains what this error means, so we are not sure how to address or fix the issue.
Most of the users who reported this error are using iOS 18.2.1 and iOS 18.3.1.
Could you please advise on what we should check or how we might resolve this error?
Thank you very much for your help!
Looking through the sources I can see an error associated with the symbol kCoreMediaErrorDomain, but it basically means "the error is in Core Media" and it's paired with many different error messages that I expect you will be able to find in logs. I also tried searching and cross-referencing -42709 (and symbols associated with -42709) for something more specific, but I was unsuccessful.
Capturing a sysdiagnose together with the exact time when the error occurred may reveal more information in the logs contained therein (hopefully the symbol "CoreMediaErrorDomain" together with an error message):
https://developer.apple.com/bug-reporting/profiles-and-logs/?name=sysdiagnose
If you manage to capture a sysdiagnose post a link to it here together with the exact time and date when the error occurred please file a bug report and attach the sysdiagnose report. Post the Feedback Number here and I'll be glad to look through the logs and see if I can find any additional error messages therein.
Bug Reporting: How and Why? has tips on creating your bug report.