@Deepak , Earlier version of Operations Managers has Allow log on locally as the default log on type. Operations Manager 2019 uses Service Log on by default.
The following accounts can be granted Log on as a Service permission in SCOM 2019
- Management Server Action account
- System Center configuration service and System Center data access service accounts
- Agent action account
- Data Warehouse Write account
- Data Reader account
We can see more details in the following link:
https://learn.microsoft.com/en-us/system-center/scom/enable-service-logon?view=sc-om-2019
Hope it can help.
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