已安装.NET7/8，如何解决ModsStudio2Previewer.exe仍需安装Desktop Runtime问题

我已安装.NET 7和8，但运行ModsStudio2Previewer.exe时仍提示需安装.NET Desktop Runtime。以下是CMD中执行dotnet --info的输出：

.NET SDK:
Version:           8.0.101
Commit:            6eceda187b
Workload version:  8.0.100-manifests.69afb982

Runtime Environment:
OS Name:     Windows
OS Version:  10.0.22621
OS Platform: Windows
RID:         win-x64
Base Path:   C:\Program Files\dotnet\sdk\8.0.101\

.NET workloads installed:
Workload version: 8.0.100-manifests.69afb982
There are no installed workloads to display.

Host:
Version:      8.0.1
Architecture: x64
Commit:       bf5e279d92

.NET SDKs installed:
7.0.405 [C:\Program Files\dotnet\sdk]
8.0.101 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 7.0.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.15 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 7.0.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.15 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 7.0.7 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.15 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.1 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
None

Environment variables:
Not set

global.json file:
Not found

解决方案排查方向 #

• 检查应用依赖的Runtime版本：部分旧版应用可能依赖特定版本的.NET Desktop Runtime（如6.0），即便已安装7/8也无法兼容。可查看应用目录下的.runtimeconfig.json文件，或使用工具检测其依赖版本。
• 确认架构匹配：从输出看仅安装了x64架构的Runtime，若ModsStudio2Previewer.exe是x86（32位）程序，需安装对应x86版本的.NET Desktop Runtime。
• 修复.NET安装：打开控制面板→程序和功能，找到已安装的.NET组件，右键选择「更改」→「修复」，修复可能损坏的安装文件。
• 手动指定Runtime：在应用目录下创建.runtimeconfig.json文件，指定已安装的Desktop Runtime版本，示例：

{
  "runtimeOptions": {
    "framework": {
      "name": "Microsoft.WindowsDesktop.App",
      "version": "8.0.1"
    }
  }
}

内容的提问来源于stack exchange，提问作者janet