3597509 - Connection issue 'Updating logon groups failed' with Analysis for Office

Certain users having Analysis for Office issue logging in with SSO while other local excel files are opened. It is not the case with Admins.

Logs show: Could not connect with user due to connection (RFC Communication) exception 3. Details: RETURN CODE: -101 (no message) (RETURN CODE: -101 (no message))

Couldn't establish safe connection to system G2P (GET S/4HANA - PRODUCTION)

The nco trace has the error message:

Updating logon groups failed
SAP.Middleware.Connector.RfcCommunicationException: 
ERROR       group PUBLIC is not rfc enabled
TIME   
RELEASE     789
COMPONENT   LG
VERSION     5
RC          -14
MODULE      D:/depot/bas/789_REL/src/krn/lg/lgxx.c
LINE        10963
DETAIL      LgApplSrvList4Group
COUNTER     1

RETURN CODE: -14

AFO report created based on CDS View

Zscaller VPN

KBA , BC-IAM-SSO-SL , Secure Login , BI-RA-AO-XLA , Excel Addin , Problem