Microsoft Intune – Add local administrator account all devices

Create a new Device configuration file

Navigate to intune -> Home->Devices->Manage Devices->configuration 

Create a new Policies

Platform: Windows 10 and later

Profile Type: Template 

Select: Custom

Go to configuration settings

Add new row

Name: Admin

OMA-URI: 

./Device/Vendor/MSFT/Accounts/Users/Admin/Password

Data Type: String

Value: Lost@12345

Add one more raw for adding local admin group

Name: Adding admin group

OMA-URI: ./Device/Vendor/MSFT/Accounts/Users/Admin/LocalUserGroup

Data type: Integer

Value: 2

Save and apply to the configuration file to Device groups