Should I use the .NET 4.0 or the .NET 2.0 DLLs?

QLM provides several sets of .NET DLLs that are located in these folders

C:\Program Files\Soraco\QuickLicenseMgr\Redistrib\netx

QlmControls.dll

QlmLicenseLib.dll

QlmLicenseWizard.exe

The following table shows which version of .NET is preinstalled on Windows and which QLM DLL to use in each case. You can find the full article here.

.NET Version	Included in or can be installed on	Works with
.NET 2.0	Windows 2003 Server Windows 2008 Server	QLM .NET 2 DLLs
.NET 3.0	Visa Windows 2008 R2	QLM .NET 2 DLLs
.NET 3.5	Windows 7 Windows 8, 8.1, 10 (can be installed) Windows 2008 R2 SP1	QLM .NET 2 DLLs
.NET 4.52 or higher	Windows 10 (requires latest update) Windows Server 2016	QLM .NET 4.0 DLLs

For example, if you install your application on a Windows 8.1 operating system, it is preferred to use the QLM .NET 4.0 DLLs. However, you can still use the .NET 2.0 DLLs on Windows 8.1 if you install .NET 2.0 (or 3.0 or 3.5) on the customer's system.