> Source: [sk170515](https://support.checkpoint.com/results/sk/sk170515)

# sk170515 - "Connection Failed: Could not agree on common methods. Check that the user is properly defined. " when client tries to connect using only DH group 5

| Property | Value |
|----------|-------|
| Solution ID | sk170515 |
| Date Created | 2020-11-16 |
| Last Modified | 2022-11-21 |
| Technical Level | Advanced |

## Symptoms

- * "Connection Failed: Could not agree on common methods. Check that the user is properly defined. " when client tries to connect using only DH group 5.

* Similar log in file $FWDIR/log/vpnd.elg:  
  `

  [vpnd 6282 4092762016]@GW8030[6 Nov 13:25:30] get_force_ra_pfs_from_registry: force_ra_pfs = 0`  
  `
  [vpnd 6282 4092762016]@GW8030[6 Nov 13:25:30][tunnel] transformsMatch: Entering (check_group=1)`  
  `
  [vpnd 6282 4092762016]@GW8030[6 Nov 13:25:30][stat] vpn_inc_status_VPND_counter: increased counter 9`  
  `
  [vpnd 6282 4092762016]@GW8030[6 Nov 13:25:30][tunnel] chooseProposalFromList: Failed to match proposal. Transform: AES-256, SHA1, Group 2 (1024 bit); Reason: Wrong value for: Hash Algorithm`  
  `
  [vpnd 6282 4092762016]@GW8030[6 Nov 13:25:30][tunnel] MMProcess1: ERROR: Cannot choose a proposal for client`  
  `
  [vpnd 6282 4092762016]@GW8030[6 Nov 13:25:30][MSGO] [MSGO] MsgObj_vcumulate: BEGIN`  
  `
  [vpnd 6282 4092762016]@GW8030[6 Nov 13:25:30][MSGOBJ] msg_obj_init: msg_obj: OK`  
  `
  [vpnd 6282 4092762016]@GW8030[6 Nov 13:25:30][MSGO] [MSGO] MsgObj_vcumulate: Set= <0x94e7fe8>`  
  `
  [vpnd 6282 4092762016]@GW8030[6 Nov 13:25:30][MSGO] [MSGO] MsgObj_vcumulate: Set= (msg_obj`  
  `
  :format (1.0)`  
  `
  :id (VPN_NO_COMMON_METHODS_MM)`  
  `
  :def_msg ("Could not agree on common methods.`  
  `
  Check that the user is properly defined.")`  
  `
  :arguments ()`  
  `
  [....]`  
  `
  Failed to match proposal: Transform: AES-256, SHA1, Group 2 (1024 bit); Reason: Wrong value for: Hash Algorithm`

## Cause

Remote Access Clients support only Diffie-Hellman Group 2 (1024) and Diffie-Hellman Group 14 (2048).

## Solution

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---

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