Deleted computer keeps reappearing in SCCM

Question

I have found that a computer that was deleted from SCCM and AD keeps reappearing. We've deleted it multiple times from SCCM but it keeps coming back despite not being in AD and not being online.

The discovery agent is "MP_ClientRegistration" alone whereas other devices show that and "SMS_AD_SYSTEM_DISCOVERY_AGENT", "Heartbeat Discovery", and "SNS_MIGRATION_MANAGER".

I have right-clicked and selected Delete and removed it via Remove-CMDevice via Powershell but it returns regardless.

We do not use AD Forest Discovery nor Network Discovery but do use the others.

Why would this device keep coming back?

Skip

Answer 1

I will verify that they're offline. The devices are at another office and another tech told me that had been taken offline but I will triple verify this.

Thanks,
Skip

Answer 2

Same here Skip, devices list active in SCCM, devices are not pingable, which means AD is picking them up on discovery. I have confirmed those systems don't exist on any DC, confirmed gone from DNS, no DHCP entries, and tombstoned the WINS entries. Still, the cat comes back the very next day! Ideas?

Answer 3

just because a device is not ping able doesn't mean it wasn't online. is the device shows the mp registration details, with "todays" date ? exactly what does the properties on the device show for details?