Change the on-premises data gateway service account
The on-premises data gateway is configured to use NT SERVICE\PBIEgwService for the Windows service sign-in credential. In the context of the machine on which you install the gateway, the account by default has the right of Log on as a service.
This service account isn't the account used to connect to on-premises data sources. It also isn't the work or school account that you sign in to cloud services with.
Change the service account
To change the Windows service account for the on-premises data gateway:
Open the on-premises data gateway app, select Service settings, and then select Change account.
The default account for this service is NT SERVICE\PBIEgwService. Change this account to a domain user account within your Windows Server Active Directory domain, or use a managed service account to avoid having to change the password.
Select Change account. You need the recovery key to change the service account.
Provide the service account and password, and select Configure.
Provide your sign in account, and select Sign in.
On the next windows, select Migrate, restore or takeover an existing gateway, and follow the process for restoring your gateway.
After the restoration is complete, the new gateway uses the domain account.