Security Exception Issue
Security Exception Problem
Some users may receive “Security Exception” error while trying to use Aspose.Cells. This problem is generally happened in a web application.
Aspose.Cells has to call some Win32 GDI APIs to provide some important features. If the web server has a strict trust level, this security exception may be thrown.
Please try to create a new permission set to give Aspose.Cells.dll security permission with “Allow calls to unmanaged assemblies” enabled.