I am trying to build a Blazor Server project that I have cloned from a repo. I am getting the message in the Output window of Visual Studio 2019 that the Shared namespace does not exist. The Shared namespace is created in the Blazor template and was not something I added to the project. This also happens if I create a new project and try to run it. Others on my team are able to clone this repo and run it. I have uninstalled and reinstalled Visual Studio 2019 Enterprise edition and also the Dotnet 3.0.1 framework. The only thing I can think that might be the difference is that I updated my VS 2019 to 16.3.10, but even after uninstalling and reinstalling, I have the same issue. I know I have read some things about mismatching of VS and Dotnet core framework SDK versions causing issues but not sure if this is the case here.
I was able to resolve this issue by rebuilding the project after clearing Nuget Caches.
Path: Tools -> Nuget Package Manager -> General -> Clear all Nuget Cache(s).
I installed the Visual Studio 2017 Enterprise and updated it to the last version. I choosed the necessary web components in the Visual Studio Installer, tried to execute the devenv /InstallVSTemplates, tried to repair Visual Studio and installed .NET Core SDK (x86 and x64).
Nothing of this helped me, I still can't find the ASP.NET Core Application under .NET Core in Visual Studio. How can I solve this problem?
Solution that I found myself: Everything described above was indeed caused by a mistake in the third screen.
I did not find how to solve this problem automatically, I just installed all these .msi packages manually. The installer loads them, but for some unknown reason can not install it themselves. To install them manually, you need to go to the directory where Visual Studio is installed, there just look for these packages by name and install them. Then you need to run the installer again and if it shows another error with another package, you need to repeat the procedure with a manual installation. I had to repeat it three times with three different packages. After that, I started the installer once more and it installed the rest.
I am creating an ASP .Net Core (2.0) MVC application within Visual Studio 2017 which was working absolutely fine.
After turning off my computer yesterday and coming back to my application today, I now receive this browser error when I start the application in chrome without debugging.
Running dotnet run within the directory of the application, I can access the site just fine. It is just when I run it via Visual Studio/IIS Express I get this error.
HTTP Error 502.5 - Process Failure
The application builds and compiles just fine. I have also cleaned the solution.
Looking in the event logs I find:
Application 'MACHINE/WEBROOT/APPHOST/MYAPP' with
physical root 'C:\Users\Ben Hawkins\Desktop\Development Folder
\Dev\Website\Version_2\MYAPP\MYAPP\'
failed to start process with commandline 'C:\Program Files
(x86)\Microsoft Visual
Studio\2017\Community\Common7\IDE\Extensions\Microsoft\Web
Tools\ProjectSystem\VSIISExeLauncher.exe -argFile "C:\Users\Ben
Hawkins\AppData\Local\Temp\tmp3547.tmp"', ErrorCode = '0x80004005 :
0.
Within my output window in Visual Studio 2017 I recieve this message under
ASP NET CORE WebServer
Failed to initialize CoreCLR, HRESULT: 0x80131534
What I have tried:
Cleaning the solution, rebuilding etc
Restarting the computer
Trying to launch another application. (Same result)
Created a new application from scratch. Same result.
Repairing Visual Studio Community 2017. Same result.
Stopping/Closing IIS Express
My setup was working perfectly yesterday and suddenly is not.
Thank you for your time. I hope we can find a solution.
We finally found the issue! After logging on to the machine as a different user, we saw a warning that the main user had ignored initially. There was a 0 byte file in the root of the directory named "Program" with no file extension. It appears that this causes some sort of issue when VSIISExeLauncher.exe is invoked through Visual Studio. (Note it would work if executed from the command prompt). After deleting the file, everything worked!
We do not know how this file was placed there for certain, but suspect it was some sort of copy error when the user was pulling in files from his old hard drive.
I don't know if anyone else will come across this, but if so hopefully this helps!
Maybe you need install previous versions of .NET Core, isn't it? I installed here and it works now. I had only .NET Core 2.0 installed and I realized that applications with 1.1 stopped so when running. In Windows' event logs I've had the same error registered.
Try to change the IISExpress to IIS by creating new IIS profile and change the Lunch to IIS. It resolved my problem.
I have hit a very similar issue with ASP.net Core 2.0. I had copied my VS project to a new one, and I was getting this error message.
After doing some research, I was able to determine that the nlog.config file was not copied into the bin > Debug > net461 folder. Once I did this, I was able to run my application.
I found it by running dotnet run from the command line on my project where the csproj files live.
Had same issue yesterday (windows 10).
Solved it this way:
Update Microsoft.AspNetCore to latest (Nuget manager - 2.1.3)
Make sure the sdk also updated to latest version. if not, update it manually from Nuget console like this:
Install-Package Microsoft.NETCore.App -Version 2.1.3
Download and install latest ASP.NET Core/.NET Core: Runtime & Hosting Bundle
from here
Same problem with version 2.2. Reinstalling .NET Core SDK fixed the problem for us.
In my case, my project was setup as a website in IIS and the file "bin\IISSupport\VSIISExeLauncher.exe" was missing in the project's directory.
I simply selected "IIS" when debugging the project in Visual Studio 2019 and it generated the missing file. It also generated 2 text files (IISExeLauncherArgs.txt, pidfile.txt) in the IISSupport folder, made changes to my web.config file, and my project ran successfully.
After that I was able to access the local website that was setup in IIS without running it in Visual Studio.
I have develop a system in asp.net using win form and made its .msi file. I have installed it on my system it works perfect but when i try to install it on clients system it gives me following error.
The framework i'm using is 4.5 Visual studio 2013
This is the error i'm facing.
Need serious suggestion to resolve this error.
Thanks all .My problem sorted out using visual studio installer i add primary out and localize resources of the product in exe. Bingo the problem go on.
A project gets built fine from Visual Studio without a problem from developers work station. Now we need to more it to DEV and UAT server. I've been struggling all day trying to get my ASP.NET project built with msbuild on a server with no Visual Studio installed (dev tools not permitted on servers) -
The type or namespace name 'Optimization' does not exist in the namespace 'System.Web'
The type or namespace name 'DotNetOpenAuth' could not be found
Couple attempts were made:
1. Install Windows SDK (http://msdn.microsoft.com/en-US/windows/hardware/hh852363) - appears there has been a lot of discussions from another Stackoverflow post (Related but not exactly - Build ASP.NET 4.5 without Visual Studio on Build Server). You'd also need to add to environment variables PATH
C:\WINDOWS\Microsoft.NET\Framework64\v4.0.30319\
C:\Program Files (x86)\Microsoft SDKs\Windows\v8.0A\bin\NETFX 4.0 Tools
(This did NOT help)
2: gacutil to install the dll's?
(no vs command prompt - as said, no dev tool/Visual Studio permitted on server)
3: copy the dlls' to (i.e. same folder as MSBuild.exe):
C:\WINDOWS\Microsoft.NET\Framework64\v4.0.30319\
(This did NOT help)
4: Copy local = true
(This did NOT help - the dll's apparent msbuild can't find already in bin folder of the ASP.NET application)
It appears to be a bug with msbuild - http://social.msdn.microsoft.com/Forums/vstudio/en-US/434abf1a-30db-4b13-8062-13755898dd71/msbuild-is-unable-to-link-to-a-webapplication-project?forum=msbuild
Anyone has experience with this?
Thank you for your feedback. This is an intentional change made in VS 2012. Projects excluded from a build configuration do not get built when you are building that configuration.
Yes, I've had experience with that. I discovered that excluding the project was handy in the IDE, I think I remember so that stable libraries don't get rebuilt so often; but the user could right-click on that project and build directly just once or when really needed.
But, it broke the MSBuild.exe command-line build, because those projects were not available at all.
One thing is to add conditional logic to the build file so it knows to set things differently for an interactive user or a pure build environment:
Condition="'$(BuildingInsideVisualStudio)' == 'true'"
I ended up eventually improving the build solution in my case, so I can't recall a specific example of the Excluded thing.