How does TestStand detect the active LabVIEW version

[zou]

I have 2 version of LabVIEW installed: 2018 and 2020.

I've already setup LabVIEW 2020 to not update the windows registry.  So in windows explorer, when I double click a VI, LabVIEW 2018 gets launched.

But TestStand choose LabVIEW 2020 as the "active LabVIEW version".  Why?

How do I make TestStand choose LabVIEW 2018 instead?

[Oli_Wachno]

TestStand chooses the last LabVIEW version which has been started successfully

https://forums.ni.com/t5/LabVIEW/Change-currently-active-LV-version-in-batch-script/td-p/2422008

[zou]

Is there a way to prevent LabVIEW Update that registry key?

[Oli_Wachno · Accepted solution]

Not aware of one.

How about starting SeqEdit using a batch file?

Start the appropriate LabVIEW Version first, then SeqEdit?