> Source: [sk179568](https://support.checkpoint.com/results/sk/sk179568)

# sk179568 - "Auth exchange: Sending notification to peer: Authentication failed MyAuthMethod: Pre-shared secret" error

| Property | Value |
|----------|-------|
| Solution ID | sk179568 |
| Date Created | 2022-06-19 |
| Last Modified | 2024-07-08 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R81.20, R81.10 (EOS), R81 (EOS) |
| OS | Gaia |

## Symptoms

- * This error is found in SmartLog: `Auth exchange: Sending notification to peer: Authentication failed MyAuthMethod: Pre-shared secret.`

* These logs are found in the $FWDIR/log/vpnd.elg file:   
  `
  [ikev2] dbCommunityHandle::getPresharedSecret: No shared secret on the community.`  
  `
  [ikev2] ikeSimpOrder::getPresharedSecret: No shared secret on the community (order 8113931, ref count 1).`  
  `
  [ikev2] sign_with_shared_key: invalid key buffer`  
  `
  [ikev2] ikeAuthExchange_r::validateAuthPayload: Validation of Auth payload failed.`

## Cause

There is a duplicate object configured for the remote peer.

## Solution

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

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