IKE and AuthIP IPsec Keying Modules - Windows Vista Service
The IKEEXT service hosts the Internet Key Exchange (IKE) and Authenticated Internet Protocol (AuthIP) keying modules. These keying modules are used for authentication and key exchange in Internet Protocol security (IPsec). Stopping or disabling the IKEEXT service will disable IKE and AuthIP key exchange with peer computers. IPsec is typically configured to use IKE or AuthIP; therefore, stopping or disabling the IKEEXT service might result in an IPsec failure and might compromise the security of the system. It is strongly recommended that you have the IKEEXT service running.
This service also exists in Windows 10, 11, 7 and 8.
Startup Type
| Windows Vista edition | without SP | SP1 | SP2 |
|---|---|---|---|
| Starter | Automatic | Automatic | Automatic |
| Home Basic | Automatic | Automatic | Automatic |
| Home Premium | Automatic | Automatic | Automatic |
| Business | Automatic | Automatic | Automatic |
| Ultimate | Automatic | Automatic | Automatic |
Default Properties
| Display name: | IKE and AuthIP IPsec Keying Modules |
| Service name: | IKEEXT |
| Type: | share |
| Path: | %WinDir%\system32\svchost.exe -k netsvcs |
| File: | %WinDir%\System32\ikeext.dll |
| Error control: | normal |
| Object: | LocalSystem |
| Privileges: |
|
Default Behavior
The IKE and AuthIP IPsec Keying Modules service starts as LocalSystem and runs in a shared process of svchost.exe. If IKE and AuthIP IPsec Keying Modules fails to start, the error is recorded into the Event Log. Windows Vista startup proceeds, but a message box is displayed informing you that the IKEEXT service has failed to start.
Dependencies
IKE and AuthIP IPsec Keying Modules will not start, if the Base Filtering Engine service is stopped or disabled.
Restore Default Startup Type of IKE and AuthIP IPsec Keying Modules
Automated Restore
1. Select your Windows Vista edition and Service Pack, and then click on the Download button below.
2. Save the RestoreIKEandAuthIPIPsecKeyingModulesWindowsVista.bat file to any folder on your hard drive.
3. Right-click the downloaded batch file and select Run as administrator.
4. Restart the computer to save changes.
Note. Make sure that the ikeext.dll file exists in the %WinDir%\System32 folder. If this file is missing you can try to restore it from your Windows Vista installation media.