Apple MDM push error, but only to some iOS devices

Question

We have error with MDMpush on some iPhone devices:

Jul 30 17:52:46 Mirnas-iPhone apsd[49] : : Stream error occurred for : Error Domain=NSPOSIXErrorDomai

Answer 1

We had similar symptom long time ago, it was caused by someone changed the Apple MDM certificate after half of the devices enrolled. some device was enrolled with new cert, and rest are enrolled by old cert. the apple MDM server does not like this.

You need to enroll all the device with same cert.