Ensures successful installation

Oct 13, 2025 by talynt.org 126 views

[NETE2ESDK][Windows].NET SDK could not be installed normally if run several installs at the same time

The .NET SDK is a powerful tool for developing .NET applications. However, when installing multiple .NET SDKs simultaneously, issues may arise. In this article, we will explore the problem of .NET SDK installation failure when running multiple installs concurrently.

The .NET SDK 9.0.114 could not be installed normally if run several installs at the same time. This issue is a significant problem for developers who need to install multiple .NET SDKs for their projects.

To reproduce this issue, follow these steps:

On Windows, run a command dotnet tool install -g dotnet-install-tool to install the .NET Install Tool.
Run the command dotnet install -c 9.0.201 to install the .NET SDK 9.0.201.
While the installation is running, run the command dotnet tool install -g dotnet-runtime to install the .NET Runtime.
While the installation is running, run the command dotnet tool install -g dotnet-aspnet-runtime to install the .NET ASP.NET Runtime.
Run the command dotnet install -c 8.0.1xx to install the .NET SDK 8.0.1xx.
Run the command dotnet install -c 9.0.1xx to install the .NET SDK 9.0.1xx.
Observe the installation process.

All SDKs and Runtimes that are required should be installed normally.

The .NET SDK 9.0.104 is not listed on dotnet --list-sdks and C:\Program Files\dotnet\sdk even shows installed succeed in output.

The .NET Install Tool version is v2.2.9-b.

The operating system is Windows.

The VS Code version is 1.98.0.

The issue is caused by the concurrent installation of multiple .NET SDKs. When multiple installations are running simultaneously, the .NET Install Tool may experience conflicts and fail to install the SDKs correctly.

To resolve this issue, we can use the following solutions:

Install .NET SDKs sequentially: Instead of running multiple installations concurrently, install each .NET SDK sequentially.
Use the --no-cache option: When installing a .NET SDK, use the --no-cache option to prevent the installation from caching the SDK.
Update the .NET Install Tool: Update the .NET Install Tool to the latest version to ensure that it has the necessary fixes for concurrent installation issues.

In conclusion, the .NET SDK could not be installed normally if run several installs at the same time. This issue is caused by the concurrent installation of multiple .NET SDKs. To resolve this issue, we can use the solutions mentioned above.

To avoid this issue, we recommend the following:

Install .NET SDKs sequentially: Install each .NET SDK sequentially to prevent conflicts.
Use the --no-cache option: Use the --no-cache option when installing a .NET SDK to prevent caching.
Update the .NET Install Tool: Update the .NET Install Tool to the latest version to ensure that it has the necessary fixes for concurrent installation issues.

By following these recommendations, you can ensure that your .NET SDK installations are successful and that you can develop your .NET applications without any issues.
[NETE2ESDK][Windows].NET SDK could not be installed normally if run several installs at the same time

Q: What is the issue with installing multiple .NET SDKs at the same time? A: The issue is that the .NET Install Tool may experience conflicts and fail to install the SDKs correctly when multiple installations are running simultaneously.

Q: What are the symptoms of this issue? A: The symptoms of this issue include the .NET SDK 9.0.104 not being listed on dotnet --list-sdks and C:\Program Files\dotnet\sdk even shows installed succeed in output.

Q: How can I reproduce this issue? A: To reproduce this issue, follow these steps:

On Windows, run a command dotnet tool install -g dotnet-install-tool to install the .NET Install Tool.
Run the command dotnet install -c 9.0.201 to install the .NET SDK 9.0.201.
While the installation is running, run the command dotnet tool install -g dotnet-runtime to install the .NET Runtime.
While the installation is running, run the command dotnet tool install -g dotnet-aspnet-runtime to install the .NET ASP.NET Runtime.
Run the command dotnet install -c 8.0.1xx to install the .NET SDK 8.0.1xx.
Run the command dotnet install -c 9.0.1xx to install the .NET SDK 9.0.1xx.
Observe the installation process.

Q: What is the expected behavior? A: The expected behavior is that all SDKs and Runtimes that are required should be installed normally.

Q: What are the solutions to this issue? A: The solutions to this issue include:

Install .NET SDKs sequentially: Instead of running multiple installations concurrently, install each .NET SDK sequentially.
Use the --no-cache option: When installing a .NET SDK, use the --no-cache option to prevent the installation from caching the SDK.
Update the .NET Install Tool: Update the .NET Install Tool to the latest version to ensure that it has the necessary fixes for concurrent installation issues.

Q: How can I avoid this issue in the future? A: To avoid this issue in the future, follow these recommendations:

Install .NET SDKs sequentially: Install each .NET SDK sequentially to prevent conflicts.
Use the --no-cache option: Use the --no-cache option when installing a .NET SDK to prevent caching.
Update the .NET Install Tool: Update the .NET Install Tool to the latest version to ensure that it has the necessary fixes for concurrent installation issues.

Q: What are the benefits of installing .NET SDKs sequentially? A: The benefits of installing .NET SDKs sequentially include:

Prevents conflicts: Installing .NET SDKs sequentially prevents conflicts between installations.
Ensures successful installation: Installing .NET SDKs sequentially ensures that the installations are successful.
Reduces errors: Installing .NET SDKs sequentially reduces errors and issues.

Q: What are the benefits of using the --no-cache option? A: The benefits of using the --no-cache option include:

Prevents caching: Using the --no-cache option prevents the installation from caching the SDK.
Ensures successful installation: Using the --no-cache option ensures that the installation is successful.
Reduces errors: Using the --no-cache option reduces errors and issues.

Q: What are the benefits of updating the .NET Install Tool? A: The benefits of updating the .NET Install Tool include:

Ensures latest fixes: Updating the .NET Install Tool ensures that it has the latest fixes for concurrent installation issues.
Prevents issues: Updating the .NET Install Tool prevents issues and errors.
Improves installation process: Updating the .NET Install Tool improves the installation process.