> Source: [sk122000](https://support.checkpoint.com/results/sk/sk122000)

# sk122000 - "Failed to parse response - Malformed ostring" error message when Capsule Connect on iOS fails to authenticate with RADIUS

| Property | Value |
|----------|-------|
| Solution ID | sk122000 |
| Date Created | 2017-12-18 |
| Last Modified | 2017-12-20 |
| Technical Level | Advanced |
| Products | Endpoint Security |
| Versions | Cloud, E89.X, E88.X |
| OS | iOS |
| Platform | Mobile Devices |

## Symptoms

- * When try to login with RADIUS on Capsule Connect, see error message "Failed to parse response - Malformed ostring" on Ipad.
* Login with RADIUS works fine with Windows VPN clients.
* In Capsule Connect log, it shows: "got error response: errorCode:509, errorDesc:Failed to parse response - malformed ostring"

## Cause

The buffer that receives the prompt (challenge) is not big enough. The buffer is 256 characters, while the prompt is 282 characters.

## Solution

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

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