When I go to install v4 of .NET Framework, I get an error
.NET 4.0 framework or higher already installed
But despite of this, I am not able to run or make any project in .NET 4 Framework. I had already applied the setting from the windows features but after this also the problem is not solved as I am not getting the option to choose .NET Framework 4 in Visual Studio.
I am using Windows 10 with Visual Studio 2022.
Related
I am trying to deploy Asp.Net Core 2.1 application with target framework 4.6.1 on server. I am using dotnet publish command and copying the publish folder on the server where deployment is intended. Everything works fine on local machine. But when I am trying to run the application on the server , it is throwing the exception ".Net Framework 4.6.1 not installed, please install it.".
I thought .Net framework is not installed but when I checked installed software , I can see .Net 4.6.1 is installed. Not sure why the error is occurring.
Here is screenshot for the application error and installed software
That error is odd, since you do indeed seem to have that version installed. However, I believe it may be a red herring. I haven't personally tried to run ASP.NET Core 2.1 on .NET Framework, but I suspect it may not work at the moment. The full framework support depends on .NET Standard compatibility which only goes up to .NET Core 2.0. (With .NET Standard 2.0). ASP.NET Core requires .NET Core 2.1. You can try targeting a later version of .NET Framework - something recent like 4.7.2. You may need to downgrade to ASP.NET Core 2.0, if you need to target .NET Framework.
Your list only shows development packages to support targeting and developing for .NET Framework 4.6.1
See How to: Determine which .NET Framework versions are installed for ways to check the .NET Framework version on the machine.
I installed MS visual studio community 2017 along with all the necessary plugins but when I am trying to create a web application in C# only the .net frameworks upto 3.5 are available and as a result I can not create MVC based C# web applications because only the option empty web application appears. I installed the .net framework 4.6.2 development pack separately but even that the issue could not be corrected. How can I solve this issue?
I am trying to deploy a project visual studio 2015 project in IIS 8 and I get the following error :
hosting_error
The target framework in the <compilation> element of the web.config
file is used only to target version only to 4.0 and later of the .NET
framework (for example <target framework="4.0">. The target
framework currently references to a version that is later than the
installed version of the .NET framework. Specify a valid version of
the .NET framework, or install the required version of .NET framework.
My .NET version is 4.5.2. So, how can I solve this issue. Please help me in this. Should I install VS 2015 in my server where the IIS 8 resides. I have checked the App_pools, They are targeted to 4.0 version. Please help me in this.
In IIS, The Application pool version need to be changed from 2.0 to 4.0. That will solve the Issue.
I have a WCF web service which was working on Windows 8.1. After upgrading to Windows 10, I noticed that the IIS is not installed anymore. So I installed it along with ASP.NET 4.6 in Windows features. Now, when I open the project in VS2013 it says that ASP.NET 4.5 is not registered. Shouldn't it work with ASP.NET 4.6?
I had the same issue and was able to fix it by installing Visual Studio 2013 Service Pack 5 (the latest at that time).
You can download it from here:
https://www.visualstudio.com/en-us/news/vs2013-update5-vs.aspx
Make sure to select the right version according to the Visual Studio version you have.
Our current environment is .NET 3.5 SP1 but we're in the process of migrating to .NET4 and Visual Studio 2010.
I would like to stick to using .NET 3.5 for the deployment/production environment however use Visual Studio and TFS 2010 for development, until the production environment is cleared for upgrade to .NET4. Is this possible (I assume yes :B), and how?
What I have tried is changing the TargetFrameworkVersion in the project settings to "v3.5". However, I get a build failure due to the classes in System.Web.Security that moved to System.Web.ApplicationServices in .NET 4 (e.g. MembershipUser) not being found... so it appears that it is using .NET4 libraries and not .NET3.5? Do I add the System.Web.ApplicationServices library to my project, and if so, does this mean it will still run on .NET 3.5?
Also, I noticed that the ToolsVersion of the project is 4.0, would changing it from 4.0 to 3.5 be the correct thing to do? When I do this, re-opening the project causes Visual Studio to run the conversion process, changing the ToolsVersion back to 4.0 ...
Cheers,
James
You must have Visual Studio 2008 installed to be able to target .NET 3.5 in Visual Studio 2010.