Top "Asp.net-4.0" questions

This tag refers to the version 4.0 of the ASP.

How to fix: Handler "PageHandlerFactory-Integrated" has a bad module "ManagedPipelineHandler" in its module list

I am configuring an MVC 3 project to work on a local install of IIS and came across the following 500 error: …

asp.net-mvc iis-7 configuration asp.net-4.0
The type is defined in an assembly that is not referenced, how to find the cause?

I know the error message is common and there are plenty of questions on SO about this error, but no …

c# asp.net .net asp.net-4.0
Could not load file or assembly 'System.Web.WebPages.Razor, Version=2.0.0.0

I just upgraded packages in an MVC 3 project (ASP.net 4), and now I am getting the following error message when …

asp.net-mvc-3 razor dependencies asp.net-4.0
ASP.net Getting the error "Access to the path is denied." while trying to upload files to my Windows Server 2008 R2 Web server

I have an asp.net webapplication that uploads files to a specific folder on the Web server. locally everything works …

c# asp.net .net asp.net-4.0 windows-server-2008-r2
ValidateRequest="false" doesn't work in Asp.Net 4

I have a form at which I use ckeditor. This form worked fine at Asp.Net 2.0 and 3.5 but now it …

asp.net asp.net-4.0 validate-request
How to fix 'Microsoft Excel cannot open or save any more documents'

I am running C# ASP.NET 4.5 web application on Windows 7 64-bit using IIS 7.5. The application pool it uses has the …

iis-7 asp.net-4.0 office-interop windows-7-x64 excel-interop
Check if Cookie Exists

From a quick search on Stack Overflow I saw people suggesting the following way of checking if a cookie exists: …

c# asp.net cookies webforms asp.net-4.0
HTTP Error 503. The service is unavailable under simple ASP.NET 4.0 web site

Something strange happened on my local laptop: my web site that worked locally for a long isn't launched... Trying to …

asp.net asp.net-4.0
An attempt to attach an auto-named database for file ....database1.mdf failed

I am getting the following error while debugging my visual studio 2010 website: An attempt to attach an auto-named database for …

asp.net vb.net sql-server-2008 asp.net-4.0 unc
Font awesome inside asp button

This is my asp:button code which is not rendering font awesome's icon but instead shows the HTML as it …

c# asp.net .net asp.net-4.0