Telemetry Worker, Lighthouse Bitacore Framework - what are these? Showed up after updating to Tahoe.

I just updated to Tahoe on my 2021 MacBook Pro. When I open my laptop each morning I have three popups that keep showing. One says “.com.apple.mlhost.Telemetry-Worker” differs from perviously opened versions. Are you sure you want to open it?” The other two message boxes are similar, but one says .com.apple.LighthouseBitacore-Framework.BitacoraWorker.


I cannot find these on my computer anywhere and don’t know what they are. I have restarted my computer a few times and they still pop up. Can someone please help me?


MacBook Pro 14″, macOS 26.1

Posted on Nov 28, 2025 10:42 AM

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Question marked as Top-ranking reply

Posted on Nov 28, 2025 12:39 PM

mmihailoff wrote:

I just updated to Tahoe on my 2021 MacBook Pro. When I open my laptop each morning I have three popups that keep showing. One says “.com.apple.mlhost.Telemetry-Worker” differs from perviously opened versions. Are you sure you want to open it?” The other two message boxes are similar, but one says .com.apple.LighthouseBitacore-Framework.BitacoraWorker.

I cannot find these on my computer anywhere and don’t know what they are. I have restarted my computer a few times and they still pop up.

https://discussions.apple.com/content/attachment/ba7ebdb4-3fc8-42d6-822a-9312e9c018c3
Can someone please help me?



A SafeBoot Start up your Mac in safe mode - Apple Support will sort many anomalies

Login and test. Reboot as normal and test. Caches get rebuilt automatically.



com.apple.mlhost.Telemetry-Worker is a benign, internal Apple process on iOS and macOS devices responsible for securely collecting and sending machine learning (ML) related analytics data to Apple for product improvement


com.apple.LighthouseBitacore-Framework.BitacoraWorker is a legitimate, internal system process and framework that is part of macOS Sonoma (macOS 14) and later operating systems



You do not say—updated to your "2021 MacBook Pro" from what to what exactly...???




Seems an upgrade glitch of sorts if not a bug...if no resolve


You can try reinstalling the nacOS on top of your existing macOS to sort issue:

How to reinstall macOS Recovery (both M1/M2/M3/M4 and Intel) — How to reinstall macOS - Apple Support




1 reply
Question marked as Top-ranking reply

Nov 28, 2025 12:39 PM in response to mmihailoff

mmihailoff wrote:

I just updated to Tahoe on my 2021 MacBook Pro. When I open my laptop each morning I have three popups that keep showing. One says “.com.apple.mlhost.Telemetry-Worker” differs from perviously opened versions. Are you sure you want to open it?” The other two message boxes are similar, but one says .com.apple.LighthouseBitacore-Framework.BitacoraWorker.

I cannot find these on my computer anywhere and don’t know what they are. I have restarted my computer a few times and they still pop up.

https://discussions.apple.com/content/attachment/ba7ebdb4-3fc8-42d6-822a-9312e9c018c3
Can someone please help me?



A SafeBoot Start up your Mac in safe mode - Apple Support will sort many anomalies

Login and test. Reboot as normal and test. Caches get rebuilt automatically.



com.apple.mlhost.Telemetry-Worker is a benign, internal Apple process on iOS and macOS devices responsible for securely collecting and sending machine learning (ML) related analytics data to Apple for product improvement


com.apple.LighthouseBitacore-Framework.BitacoraWorker is a legitimate, internal system process and framework that is part of macOS Sonoma (macOS 14) and later operating systems



You do not say—updated to your "2021 MacBook Pro" from what to what exactly...???




Seems an upgrade glitch of sorts if not a bug...if no resolve


You can try reinstalling the nacOS on top of your existing macOS to sort issue:

How to reinstall macOS Recovery (both M1/M2/M3/M4 and Intel) — How to reinstall macOS - Apple Support




Telemetry Worker, Lighthouse Bitacore Framework - what are these? Showed up after updating to Tahoe.

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