The "VsTsc" operation was unable to start due to issues with its provided input parameters

Encountering the following error when building an Asp.NetCore project in Visual Studio Enterprise 2017 Version 15.6.0. The error sometimes disappears upon restarting Visual Studio, but a permanent solution has not been found.

Error MSB4064: The "ComputeOutputOnly" parameter is not supported by the "VsTsc" task. Please verify that the parameter exists on the task, and is a settable public instance property. MyProject.Web.Public C:\Program Files (x86)\Microsoft SDKs\TypeScript\2.5\build\Microsoft.TypeScript.targets 207 Error MSB4063: The "VsTsc" task could not be initialized with its input parameters. MyProject.Web.Public C:\Program Files (x86)\Microsoft SDKs\TypeScript\2.5\build\Microsoft.TypeScript.targets 196

c#visual-studiotypescriptasp.net-corevisual-studio-2017

Answer №1

If you're facing this issue, don't worry - there's a solution available. This issue is a known problem, as mentioned earlier.

  • First, make sure to close all instances of VS2017.
  • Next, navigate to the C:\Program Files (x86)\Microsoft SDKs\TypeScript\2.7\build folder using Windows Explorer.
  • Within that folder, rename TypeScript.Tasks.dll to TypeScript.Tasks.dll.27 and Microsoft.TypeScript.targets to Microsoft.TypeScript.targets.27.
  • Change the address bar from 2.7 to 2.4 to access the equivalent folder for version 2.4.
  • Now, copy the TypeScript.Tasks.dll and Microsoft.TypeScript.targets files from the 2.4 folder, then navigate back to the 2.7 folder to paste them. Remember, the DLL must correspond with the targets file.

These steps also apply to TypeScript version 2.6.

Follow these instructions, and everything should work smoothly.

Answer №2

For those encountering this issue in 2020 while using Visual Studio 2019, follow these steps to resolve it. Begin by restoring your NuGet packages, but before doing so, clear your global repository:

Close Visual Studio and then open PowerShell:

dotnet nuget locals global-packages --clear

Next, either delete or rename the packages folder within your project directory. Once completed, restart Visual Studio and perform a NuGet Restore as usual.

For more detailed information, refer to https://learn.microsoft.com/en-us/nuget/consume-packages/package-restore

Answer №3

Encountered the same issue during build/clean while running multiple instances of Visual Studio 15.9.3. Resolved the problem by closing all instances and reopening Visual Studio.

Received an error stating that the "ComputeOutputOnly" parameter is not supported by the "VsTsc" task. Checked if the parameter exists and is a settable public instance property.

Additionally, faced an issue where the "VsTsc" task could not be initialized with its input parameters.

However, later on, encountered another error after starting and building a few times:

Received an error that the "TypeScript.Tasks.GenerateOutputLogs" task could not be loaded from the assembly path. Checked the declaration, availability of the assembly and its dependencies, and ensured that the task contains a public class that implements Microsoft.Build.Framework.ITask.

Attempted to resolve by upgrading to Visual Studio 15.9.6, which temporarily fixed the issue but the errors resurfaced later on.

Finally, successfully resolved the issue by running Visual Studio as Administrator.

Answer №4

The issue appears to have been fixed in the latest version of Visual Studio 2017, namely v15.6.7. I can confirm that the build error disappeared for me after updating to this version.

Answer №5

If you're facing an issue with TypeScript, you can check out the open problem on GitHub at this link: https://github.com/Microsoft/TypeScript/issues/22422. A potential workaround has been shared by Manish3177, but it's always a good idea to test it yourself to confirm its effectiveness.

UPDATE: After testing the workaround, I can confirm that it worked for me. Manish3177 has provided detailed insights into the root cause of the issue. The workaround involves making modifications to the Microsoft SDKs by moving v.2.4 task files to the v.2.7 directory. Let's hope that the Typescript team will release an official fix for this issue soon.

Answer №6

Resolved the issue by updating the following `nuget packages in the current project.

TypeScript.MSBuildTask, Microsoft.TypeScript.Compiler and

Microsoft.TypeScript.MSBuild

Source

Answer №7

Previously, my Visual Studio 2015 was running TypeScript 2.6. Upon uninstalling it and updating to version 2.9.2 (the most recent version at the time), the problem was resolved successfully.

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