Hi,
Which version of Windows 10 1607 do you have? LTSC or SAC?
If it's Semi-Annual Channel (SAC), it has already reached its end of support.
What is the status in the Monitoring/Deployments node of Windows 10 1607 devices? Did you check the client log files?
Regards,
Youssef Saad | Blog: https://youssef-saad.blogspot.com
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