I have an ASP .NET CORE application hosted on IIS server. I am using telerik reporting to generate reports. While generating reports it shows "Internal Server Error A generic error occurred in GDI+". At first I thought the problem was due to telerik repot setting was not configured properly but it was configured properly. And at last i found the issue. The issue was the report was not taking some text properly. The text was "चौधरी" and i again typed the text like this "चौधरी" it was supported. The report is being generated properly on applications hosted on windows 10 operating system with the same text i.e. "चौधरी" but on application hosted on Windows server 2012 R2 standard shows "Internal Server Error A generic error occurred in GDI+". Is the operating system creating problem as some unicodes may not be supported in old operating systems? I need solution. I did some research and did changes accordingly but nothing helped the error is still coming. The image of error message is attached with the post.