> Source: [sk144932](https://support.checkpoint.com/results/sk/sk144932)

# sk144932 -  When Multiple Factor Authentication is configured with DynamicID , VPN clients receive 4 password prompts 

| Property | Value |
|----------|-------|
| Solution ID | sk144932 |
| Date Created | 2019-01-17 |
| Last Modified | 2021-07-11 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R81 (EOS) |
| OS | Gaia |

## Symptoms

- * When Multiple Factor Authentication is configured for Remote Access VPN, VPN clients are prompted for the password four times:
  * Prompt 1 asks for the username and password.
  * Prompt 2 asks for the password again.
  * Prompt 3 asks if the user wants to receive the DynamicID via SMS or Email.
  * Prompt 4 asks for the DynamicID that was sent via SMS or Email.
  * An additional password prompt is also displayed.
* vpnd.elg debug will show the following lines:  
  \[MSGOBJ\] msg_obj_serialize: buffer too small (1041 \< 1084)  
  \[MSGO\] MsgObj_ser: Input buffer is too small for operation

## Cause

The buffer of the message were too small to fit the whole message.

## Solution

This problem was fixed. The fix is included in:

* [Jumbo Hotfix Accumulator for R80.40](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk165456) starting from Take 119
* [Jumbo Hotfix Accumulator for R80.30](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk153152) starting from Take 237

If you choose not to upgrade, Check Point can supply a **Hotfix** . [Contact Check Point Support](https://www.checkpoint.com/support-services/contact-support/) to get a Hotfix for this issue.  
A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.  
For faster resolution and verification, please collect [CPinfo files](http://supportcontent.checkpoint.com/solutions?id=sk92739) from the Security Management Server and Security Gateways involved in the case.

**Hotfix installation instructions:**   
Refer to [sk168597 - How to install a Hotfix](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk168597).

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