XNET Create Session (Generic) returns error -1074384895

[RonW]

I posted this a couple of hours ago, and it doesn't show up, so I'm trying again...

XNET Create Session (Generic) returns error -1074384895. "Explain Error" gives the following:

NI-XNET: (Hex 0xBFF63001) An internal error occurred in the NI-XNET driver. Please contact National Instruments and provide the information from the file %LOCALAPPDATA%\National Instruments\NI-XNET\log\niXntErr.log. On Windows XP, the file can be found at %USERPROFILE%\Local Settings\Application Data\National Instruments\NI-XNET\log\niXntErr.log. Please note that this location may be hidden on your computer.

The contents of the log file in question is:

Current Row: 0006 Max Num Rows: 001000
(1000) - Log Options: (Internal Errors, User Errors, Internal Warnings, User Warnings)
Date and Time Format YYYY-MM-DD HH:MM:SS (24-hour time)
NI-XNET 25.3.0f234

Row Date and Time Severity Type Component File Line Code (hex) Info (hex)
------------------------------------------------------------------------------------------------------------------------------
0001 2025-08-06 12:31:42 Error Internal 9 37 115 0x00000001 0xa4258073
0002 2025-08-06 12:33:15 Error Internal 1 40 2690 0x00000001 0x84288a82
0003 2025-08-06 12:33:17 Error Internal 1 40 2690 0x00000001 0x84288a82
0004 2025-08-06 12:33:18 Error Internal 1 40 2690 0x00000001 0x84288a82
0005 2025-08-06 12:34:02 Error Internal 9 37 115 0x00000001 0xa4258073
0006 2025-08-06 12:34:08 Error Internal 9 37 115 0x00000001 0xa4258073

The details:

• The target system is a PXIe-8862 Controller in a PXIe-1084 chassis, with (4) PXI-6528 Digital I/O modules and (6) PXI-8512 CAN Interfaces.
• The target system is running Windows 11.
• The test application was compiled using LabVIEW 2014 SP2, version 14.0.1f11 (32-bit)
• The sessions are created in a loop. The error occurs in the first iteration, i.e. the first time XNET Create Session is called.
• The error only occurs the first time the application is run after the computer is powered up, and then only about half the time.
• When the error occurs, Create Session takes a long time to fail - over a second.
• I tried having the loop retry creating the session once if it fails, preceded by a 500ms delay. This sometimes works.

[RonW]

XNET Create Session (Generic).vi is giving me error -1074384895.

"Explain error" gives the following text:

NI-XNET: (Hex 0xBFF63001) An internal error occurred in the NI-XNET driver. Please contact National Instruments and provide the information from the file %LOCALAPPDATA%\National Instruments\NI-XNET\log\niXntErr.log. On Windows XP, the file can be found at %USERPROFILE%\Local Settings\Application Data\National Instruments\NI-XNET\log\niXntErr.log. Please note that this location may be hidden on your computer.

The details:

• The application is running on a new PXIe-1084 chassis with a PXIe-8862 controller running Windows 11, (4) PXI-6528 Digital I/O cards, and (6) PXI-8512 CAN Interfaces.
• The application was compiled using LabVIEW 2014 SP1, 14.0.1f11 32-bit.
• The error only occurs the first time I run the application after powering on the PC, and only about half the time I run it.
• The application creates several sessions in a loop. The error occurs during the first iteration of the loop, so it isn't caused by a previous call.
• Here is the contents of the resulting log file:

Current Row: 0006 Max Num Rows: 001000
(1000) - Log Options: (Internal Errors, User Errors, Internal Warnings, User Warnings)
Date and Time Format YYYY-MM-DD HH:MM:SS (24-hour time)
NI-XNET 25.3.0f234

Row Date and Time Severity Type Component File Line Code (hex) Info (hex)
------------------------------------------------------------------------------------------------------------------------------
0001 2025-08-06 12:31:42 Error Internal 9 37 115 0x00000001 0xa4258073
0002 2025-08-06 12:33:15 Error Internal 1 40 2690 0x00000001 0x84288a82
0003 2025-08-06 12:33:17 Error Internal 1 40 2690 0x00000001 0x84288a82
0004 2025-08-06 12:33:18 Error Internal 1 40 2690 0x00000001 0x84288a82
0005 2025-08-06 12:34:02 Error Internal 9 37 115 0x00000001 0xa4258073
0006 2025-08-06 12:34:08 Error Internal 9 37 115 0x00000001 0xa4258073

[ZYOng]

Duplicated with XNET Create Session (Generic) returns error -1074384895

[ZYOng]

---

The test application was compiled using LabVIEW 2014 SP2, version 14.0.1f11 (32-bit)

---

• The first supported LabVIEW version in Windows 11 is 2022 Q3.
• Since the application was compiled using LabVIEW 2014, most likely it was compiled before Win11. Installers and executables are only guaranteed to work on the operating system they are built on. For example, a Windows 10 installer or executable may not work as expected on a different Windows version (e.g. Windows XP, Windows 8, or Windows 7). Running Executables or Installers on Different Windows Versions

NI does not test and validate unsupported software version and cannot guarantee that it will work correctly. What you are encountering is most likely a compatibility issue.

[RonW]

I just tried it again after building it with LabVIEW 2025Q3 (32-bit) 25.3.2f2. The behavior is identical to the LabVIEW 2014 build.

The first time I run it after powerup, I get error -1074384895.

If I run it again it works fine.

[ZYOng]

In that case, see Error -1074384758 or -1074384895 using NI-XNET Create Session

You might need to add a delay between multiple sessions creation.

[Sebastian.Weber]

>The error only occurs the first time the application is run after the computer is powered up, and then only about half the time.

So, after, it's running?

I do not use PXI, but cDAQ crates. If a connection to a cDAQ crate is lost (network, power), I get such errors as well, and forever. When I look into MAX, I can see the error as red dot at my interface as well, the quick fix there is to either run a self-test on the crate, or release the reservation and re-gain it. The red dot varnishes, and after that, I can start a session.

I don't know if this applies to PXI as well, and it's kind of different, since your problem self-heals by restarting your application,  if I understand correctly. Nevertheless, maybe you can find out something with MAX.