1. Problem description
After installing VS2012+AE10.3 and arcgis license manager, creating Mapcontrol Application and opening Winform form will appear "You must have a license to use this ActiveX control."
The problem is as follows:
2. Discussion of solutions
There are many ways to solve this problem on the Internet, such as:
1. The reason why the license manager service is not started.
(1) Click Start, find the arcgis you installed, select License Manager, and then select License Server Administrator. The license runs successfully, but the problem still exists.
2. Open ArcGIS Administrator, click Engine in the directory tree, click the Chage button, and change it to localhost; ArcGIS engine is available, but it still doesn't work.
3. Try other solutions
According to online information, the most likely reason is this development version, or it may be because the permissions in the sevice.txt file are incomplete. The problem of other versions can be solved according to the above methods. No attempt to this version will work, but I can’t change it. Other versions! 10.2 version can be used directly after installation, some people say that it can be used above 10.4.