由于 System.UnauthorizedAccessException，Dotnet 无法正常工作

Question

所以，我安装了 .NET 5.0 RUNTIME 来运行我的旧程序，当我尝试运行 dotnet run 时，它向我显示：

System.UnauthorizedAccessException: Access to the path 'C:\Users\user\.dotnet\5.0.300.toolpath.sentinel' is denied.
   at System.IO.FileStream.ValidateFileHandle(SafeFileHandle fileHandle)
   at System.IO.FileStream.CreateFileOpenHandle(FileMode mode, FileShare share, FileOptions options)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize)
   at System.IO.File.Create(String path)
   at Microsoft.Extensions.EnvironmentAbstractions.FileWrapper.CreateEmptyFile(String path)
   at Microsoft.DotNet.Configurer.FileSystemExtensions.<>c__DisplayClass0_0.<CreateIfNotExists>b__0()
   at Microsoft.DotNet.Cli.Utils.FileAccessRetrier.RetryOnIOException(Action action)
   at Microsoft.DotNet.Configurer.FileSystemExtensions.CreateIfNotExists(IFileSystem fileSystem, String filePath)
   at Microsoft.DotNet.Configurer.FileSentinel.Create()
   at Microsoft.DotNet.Configurer.DotnetFirstTimeUseConfigurer.Configure()
   at Microsoft.DotNet.Cli.Program.ConfigureDotNetForFirstTimeUse(IFirstTimeUseNoticeSentinel firstTimeUseNoticeSentinel, IAspNetCertificateSentinel aspNetCertificateSentinel, IFileSentinel toolPathSentinel, Boolean isDotnetBeingInvokedFromNativeInstaller, DotnetFirstRunConfiguration dotnetFirstRunConfiguration, IEnvironmentProvider environmentProvider, Dictionary`2 performanceMeasurements)
   at Microsoft.DotNet.Cli.Program.ProcessArgs(String[] args, TimeSpan startupTime, ITelemetry telemetryClient)
   at Microsoft.DotNet.Cli.Program.Main(String[] args)

我在谷歌上搜索，我得到的只有 2 个结果，与我的问题无关。 我不知道为什么会发生这种情况，非常感谢您的帮助。