> Source: [sk92327](https://support.checkpoint.com/results/sk/sk92327)

# sk92327 - Identity Agent SSO not working 

| Property | Value |
|----------|-------|
| Solution ID | sk92327 |
| Date Created | 2013-02-13 |
| Last Modified | 2022-05-04 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |

## Symptoms

- * Identity Agent SSO is not working.
* Manual Login from agent works.
* In LDAP logs, you will see:  
  "userprincipalname=USER,  
  but it should be "userprincipalname=USER@domain"

## Cause

Default LDAP authentication was changed.

## Solution

This solution requires authentication. Please log in to view the full solution.

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