Error: winnt_accept: Asynchronous AcceptEx failed in SPS Apache

Products

• CA Single Sign On Secure Proxy Server (SiteMinder)
• CA Single Sign On SOA Security Manager (SiteMinder)
• CA Single Sign-On
• SITEMINDER

Issue/Introduction

 

When running SPS, the error is often seen:

  [warn] (OS 64)The specified network name is no longer available.: winnt_accept: Asynchronous AcceptEx failed.

 

Resolution

 

By running SPS on Windows, depending the version, SPS includes Apache 2.2 or 2.4.

Apache 2.2 documentation suggests that this error can be solved by setting the parameter:

  Win32DisableAcceptEx

By default, Apache 2.2 is using AcceptEx (1).

Set also in Apache configuration

  EnableSendfile Off
  EnableMMAP off

When running Apache 2.4, Win32DisableAcceptEx has been replaced by AcceptFilter. This issue can also be solved this with the following configuration:

  AcceptFilter https none
  AcceptFilter http none
  EnableSendfile Off
  EnableMMAP off

By default, Apache 2.2 delivers:

  EnableSendfile On
  EnableMMAP On

AcceptFilter is supported on Windows for Apache 2.4 as per documentation (2).

See the note of the same description for AcceptFilter in the Apache 2.4 documentation (3).

Default values are:

  AcceptFilter http data
  AcceptFilter https data

 

Additional Information

 

(1)

    Apache MPM winnt
    

(2)

    Apache Core Features
    

(3)

    Apache Core Features