Thank you for your interest in our products.
The precise end of validity is not made public, but is quite long - many months, can be a year.
There are two reasons : 1. We improve the product steadily, and we want the developers who evaluate the product to use the newest versions. 2. Some people use the trial license for production purposes.
The commercial license has no such expiration, of course.
i am using the trial licene to develope application under C# with Visual Studio 2013.
After some month my trial licence expires an i have got an error message: "Not allowed to run by the license. You might be using a trial license, and the version of the software you are using is obsolet"
Then i have installed the newest version of Quick OPC from your web site an my application works without problems
My question ist now: Why does the demo licence exprires? I think the trial licence dones never expires. After which period does my demo licence expires?