> Source: [sk110334](https://support.checkpoint.com/results/sk/sk110334)

# sk110334 - Authentication in E80.xx clients fails for user names that contains diacritical marks / umlaut characters

| Property | Value |
|----------|-------|
| Solution ID | sk110334 |
| Date Created | 2016-03-04 |
| Last Modified | 2025-06-24 |
| Technical Level | Advanced |
| Products | Endpoint Security |
| Versions | E89.X, E88.X |
| OS | Windows |

## Symptoms

- * Authentication in E80.6x+ clients fails for user names or passwords that contains [diacritical marks / umlaut characters](https://en.wikipedia.org/wiki/Diaeresis_(diacritic)) (e.g., `e? / a? / a?`).

* Authentication in E80.4X / E80.5X clients for the same user names / passwords succeeds.

## Cause

Encoding was changed in E80.60 to support UTF-8.

In some scenarios, there is a need to revert to the previous behavior where the credentials were sent to the gateway in ASCII encoding.

## Solution

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

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