@SUMIT KUMAR MISHRA Thanks for posting in our Q&A.
For this issue that "Co-management devices not taking automatic sync", did you mean that the last sync time isn't updated? If yes, please if the "dmwappushservice" service is automatic. Following the steps:
1.Go to Start Menu and search for Services app.
2.Open the Services app.
3.Select Dmwappushservice service from this list.
4.Change the startup type of the Dmwappushservice service to Automatic.
If there is anything update, feel free to let us know.
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