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DCOM got error "2147944122" from the computer [IP] when attempting to activate server: {SID}

Receiving error in event viewer:
    DCOM got error "2147944122" from the computer [IP] when attempting to activate server: {SID}
    EventID 1006
    Each domain controller is receiving 100 per day (probably more)

Our environment:
- 3x 2008 R2domain controllers running at 2008 level

We have recently:
- Added a 2016 domain controller (we just start on journey to upgrade to 2016) which has been promo'd and DNS configured/no DHCP yet
- Turned on scavenging in DNS (discovered it was never set - had records over 10 years old)

Error shows up on all four domain controllers (new and old).  Everything seem so be working and am unsure when the error started on the servers.

All help gratefully received as scratching head.
DNSSystem ProgrammingWindows 10AzureWindows Server 2016

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David Johnson, CD
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System Programming
System Programming

Kernel and system programming is the process of creating the software necessary for a computer or device to function and operate other programs. Some operating systems (such as Microsoft Windows) are proprietary, but others, such as the various Linux distributions, are open source.

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