LabVIEW 2022 Q3 DQMH app hangs on Windows Server 2019 but runs fine on Windows 10/11

[Qia.sky]

Hi everyone,

I’m encountering an issue where my application built with LabVIEW 2022 Q3and using a DQMH-based architecture runs smoothly on both Windows 10and Windows 11, but becomes unresponsive when deployed to our company’s existing server. The server only supports Windows Server 2019, so I installed LabVIEW 2022there for testing.

On the server, the VI starts and then becomes extremely sluggish—eventually appearing as “Not Responding” in Task Managerbefore freezing completely. Strangely, CPUand memoryusage remain low throughout. What could be causing this behavior, and how can I resolve it?

Thanks in advance for any insights.

[Kyle97330]

By itself, LabVIEW 2022 claims to be compatible with server 2019:

https://www.ni.com/en/support/documentation/compatibility/18/labview-and-microsoft-windows-server-co...

That would at least suggest that anything that's not working may not be related to LabVIEW itself, but possibly anything external it works with.

Can you provide more information about what the application does?

• Does it interact with any hardware at all?
  • If so, over what interfaces (TCP, Serial, etc.)
• Does it interface with any databases?
• Does it read/write files much (especially ones not local to the PC it's on)?
• Does it call any DLLs?
  • If so, what type (classic vs .NET) and where are they from (Windows system, self-made, 3rd party)?
• Does it use any ActiveX?

Anything that meets one of the above categories is more likely to point to a problem other than it just "existing" on Windows Server.

Is your application built in a way you could disable large portions of it to see if certain parts of it running make it slow down while other parts don't?