Symptoms

The license service on the Windows Operating system may fail to start due to unable to access the AF_UNIX socket and find the below logs

16:17:06 (demo) Starting diagnostics port listener thread (DPLT)
16:17:06 (demo) Starting diagnostics output thread (DRQT)
16:17:06 (demo) DPLT: running
16:17:06 (demo) DPLT: Diagnostic Functionality is unable to access AF_UNIX socket
16:17:06 (demo) DRQT: running
16:17:06 (demo) DRQT: terminated
16:17:06 (demo) DPLT: Diagnostic Functionality is not supported on this platform
16:24:06 (lmgrd) demo exited with status 58 ()
16:24:06 (lmgrd) Since this is an unknown status, license server
16:24:06 (lmgrd) manager (lmgrd) will attempt to re-start the vendor daemon.
16:24:06 (lmgrd) EXITING DUE TO SIGNAL 1

Diagnosis

Check the Windows build number if the build number < 17063 then there was no support for the AF_UNIX socket which is why the license server failed to start the diagnostic functionality and also failed to start the server.

Solution

1. Disable the diagnostics config to avoid this issue on the lower build operations system to do that

set the ls_diagnostics_enabled =0 in lsvendor.c file and rebuilt the application.

2. If we want to run the Diagnostic Functionality in Windows 10/11 or Windows server then use the Windows build which has more than 17063.

Worth Read:

1. AF_UNIX support comes to Windows after windows build 17063 click here to read more.

2. Which windows server version does support the Unix socket (AF_UNIX)

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dplt-diagnostic-functionality-is-unable-to-access-af-unix-socket

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Case id: 00001065