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The log shows "Received notify: PAYLOAD_MALFORMED"
12/29/2023 
49 People found this article helpful
491,168 Views
Description
The log shows "Received notify: PAYLOAD_MALFORMED"
Resolution
Received notify: PAYLOAD_MALFORMED
Although indicative of payload packet malformed in transit, this error is also returned during IKE negotiation failure due to Preshared secret mismatch.
Most likely the Preshared secret does not match.
Check the SAs in both units.
Navigate to Network - IPSec VPN - Rules and Settings - Active Tunnels.
If the above is not the cause of your issue, try lowering the MTU size on the WAN interfaces and check 'Fragment outbound packets larger than WAN MTU'.
Navigate to Network - Interfaces - Configure WAN interface
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Categories
- Firewalls > TZ Series
- Firewalls > SonicWall SuperMassive E10000 Series
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- Firewalls > SonicWall NSA Series
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