Logon Logoff Event: 4984

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Logon Logoff » Logon Logoff Event: 4984

Event ID 4984 – An IPsec Extended Mode negotiation failed

Event ID 4984
Category Logon/Logoff
Sub-Category Audit IPsec Extended Mode
Description An IPsec Extended Mode negotiation failed.

Event 4984 is generated when an IPsec Extended Mode negotiation fails, thus causing the corresponding Main Mode security association to be deleted.

Example of 4984 log:

An IPsec Extended Mode negotiation failed. The corresponding Main Mode security association has been deleted.


Local Endpoint:

Principal Name: %1

Network Address: %3

Keying Module Port: %4


Remote Endpoint:

Principal Name: %2

Network Address: %5

Keying Module Port: %6


Additional Information:

Keying Module Name: AuthIP

Authentication Method: %9

Role: %11

Impersonation State: %12

Quick Mode Filter ID: %13


Failure Information:

Failure Point: %7

Failure Reason: %8

State: %10

Why does event ID 4984 need to be monitored?

Security events which fall under the Audit IPsec Extended Mode subcategory are monitored primarily for IPsec Extended Mode troubleshooting.

Pro Tip:

With in-depth reports, real-time alerts, and graphical displays, ADAudit Plus tracks all IPsec negotiation failures, helping you meet your security, operational, and compliance needs with absolute ease.

Event 4984 applies to the following operating systems:

  • Windows Server 2016
  • Windows 10

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