Asp:ScriptManager on Jamshid Hashimihttps://jamshidhashimi.com/tags/aspscriptmanager/Recent content in Asp:ScriptManager on Jamshid HashimiHugo -- gohugo.ioen-usFri, 01 Apr 2011 16:11:39 +0000Unknown server tag ‘asp:ScriptManager’ errorhttps://jamshidhashimi.com/unknown-server-tag-aspscriptmanager-error/Fri, 01 Apr 2011 16:11:39 +0000https://jamshidhashimi.com/unknown-server-tag-aspscriptmanager-error/The problem is generally because, you had developed your website with ASP.NET 4.0 and when you put your website into server, you get this error, because the application pool which is assigned to your website do not support ASP.