---
schema_version: "1"
id: f4f87868571c50ff4c27d973e3041afdc968d050c23c38644244deb6a382e18c
title: Update Single Sign-On Accounts to Use MFA
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/release-notes/264-0-0/rn_mce_sso_mfa_amr_acc.md
canonical_url: https://help.salesforce.com/s/articleView?id=release-notes.rn_mce_sso_mfa_amr_acc.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: cecb413f37e1e2040d11ccbc141c60de68fe1fc0ac8119f0c163194e92031c6e
description: Accounts that use single sign-on must implement MFA systems with Authentication Method Reference (AMR) and Authentication Context Class Reference (ACC) claims. This requirement provides the highest level of security between your identity provider and Marketing Cloud Engagement.
products:
  - Cross Cloud
release: "264"
---
# Update Single Sign-On Accounts to Use MFA

Accounts that use single sign-on must implement MFA systems with Authentication Method Reference (AMR) and Authentication Context Class Reference (ACC) claims. This requirement provides the highest level of security between your identity provider and Marketing Cloud Engagement.

**Where:** This change applies to all Marketing Cloud Engagement editions.

**When:** This requirement isn’t enforced in the current release. In a future release, all accounts that use single sign-on must meet this requirement.

**How:** Work with your identity provider to make sure that your system meets these standards.