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How to fix FortiCloud SSO login error ‘Response validation failed. SAML response rejected’

This article describes how to fix the error ‘Response validation failed. SAML response rejected’ when logging in using SSO FortiCloud in FortiAnalyzer/FortiManager.

SSO login FortiCloud

FortiCloud SSO login error 'Response validation failed. SAML response rejected'

Scope

FortiManager, FortiAnalyzer, FortiCloud.

Solution

Pre-requisite

Enable ‘Allow admins to login with FortiCloud’ in System Settings > Admin > SAML SSO.

Enable SSO FortiCloud

Step 1: Only registered account ID/email with FortiAnalyzer/FortiManager serial number can access the device using SSO login without the need to create IAM user or permission profiles.

Example

Registered email for FortiAnalyzer, serial number FAZ-VMTMXXXXXXXX [email protected] (Account ID: 9xxxxxx1).

When logged in using FortiCloud SSO in FortiAnalyzer, it will prompt to the FortiCloud login page, and proceed to access the EMAIL LOGIN page and enter [email protected] credentials.

SSO login master

Step 2: Other users need to create as IAM users inside [email protected] account and assigned Permission Profiles with FortiOS SSO for the users.

Example

Permission Profiles named SSO user created with FortiOS SSO portal enabled, and SuperAdmin for Access Type.

Permisssion Profile

Example: IAM user [email protected] created, and assigned SSO user for permission profiles

Add permission profile

Step 3: After creating an IAM user, it must verify the email before logging in as FortiCloud SSO in FortiAnalyzer/FortiManager. Proceed to login using IAM LOGIN with [email protected] (Account ID: 9xxxxxx1) with [email protected] credentials.

IAM login SSO

Note: Account ID is located under the dropdown username

Account ID

Step 4: After verifying the IAM user email, log in from FortiAnalyzer/FortiManager using SSO FortiCloud.

After verifying the IAM user email, log in from FortiAnalyzer/FortiManager using SSO FortiCloud.