> Source: [sk118892](https://support.checkpoint.com/results/sk/sk118892)

# sk118892 - Mobile Access Gateway fails to authenticate user's certificate after user's Distinguished Name is changed in Active Directory

| Property | Value |
|----------|-------|
| Solution ID | sk118892 |
| Date Created | 2017-07-12 |
| Last Modified | 2017-07-17 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- Mobile Access Gateway fails to authenticate user's certificate after user's Distinguished Name is changed in Active Directory.

## Cause

During Mobile Access login, the Mobile Access Gateway authenticates the certificate's registered Distinguished Name with the actual Active Directory Distinguished Name. If there is a mismatch, the authentication fails.

## Solution

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

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