Add Service Account to Local IIS_IUSRS Group of the CAS/EAS Server

Add a service account to the IIS user groups of the ActiveSync server.

Procedure

1. On the CAS/EAS server, open Server Manager and navigate to Configuration > Local Users and Groups > Groups.
2. Right-click IIS_IUSRS and select Add to Group. Select Add… to search for the SVC_awseg Service Account, add the user to the local group, and then select OK.