> Source: [sk104102](https://support.checkpoint.com/results/sk/sk104102)

# sk104102 - Clients using Check Point Capsule Workspace application cannot authenticate to mail container over NTLM with special characters in username

| Property | Value |
|----------|-------|
| Solution ID | sk104102 |
| Date Created | 2015-01-07 |
| Last Modified | 2019-11-22 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- When attempting to authenticate to the exchange server using the mail container, users with special characters in the username are unable to authenticate if the authentication is done over NTLM.

## Solution

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