To change a product which has already been installed from network to stand-alone, or stand-alone to network – you’ll modify the LGS.data file with Notepad. Ensure the product you wish to modify is closed.
To find the appropriate LGS.data file for your application, you’ll start with C:\ProgramData\Autodesk\CLM\LGS\
From there, you’ll be looking for the product version first, and then the key.
The folder names are structured so that the product key comes first, and underscore, and then the version. It will look like this:
That happens to be Autodesk Vault Professional 2019. In that folder, there is an LGS.data file. Select it, right-click on it, and pick Open With…
Select Notepad from the list of options.
Change the file. If it’s a network currently, you’ll see _NETWORK. You want that to be stand-alone? Change it to _STANDALONE
If it already says _STANDALONE and you want it to be a network license, you’ll change it _NETWORK
Save the file.
Launch the product. It should now take you through the process (network or stand-alone) for obtaining a license for your product.