Visual Studio Installer 0x801315

[3e20:0003][2020-03-04T14:06:36] Error 0x80131500: Unexpected character encountered while parsing value: $. Path ''.

  在 Newtonsoft.Json.JsonTextReader.ParseValue()

  在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.ReadForType(JsonReader reader, JsonContract contract, Boolean hasConverter)

  在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)

  在 Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)

  在 Newtonsoft.Json.JsonSerializer.Deserialize[T](JsonReader reader)

  在 Microsoft.VisualStudio.Setup.Serialization.ModelSerializer`1.Deserialize(TextReader reader)

  在 Microsoft.VisualStudio.Setup.Cache.DirectoryRepository.GetPackage(IPackageIdentity identity)

  在 Microsoft.VisualStudio.Setup.Cache.CacheRepository.GetPackage(IPackageIdentity identity)

  在 Microsoft.VisualStudio.Setup.Installer.Extensions.IsPayloadRequired(IInstallablePackage package, ExecuteAction action, IServiceProvider services, ExecuteAction bootstrapperAction)

  在 Microsoft.VisualStudio.Setup.InstallOperation.CreateDownloadInstallActivities(InstallablePackage installable, ExecuteAction action, Boolean isPresent)

  在 Microsoft.VisualStudio.Setup.InstallOperation.PlanInstallable(InstallablePackage installable, Dictionary`2 downloadLookup, PackagePlan& packagePlan, Boolean repairPackagesWithDuplicateFiles, Boolean upgradeConfigurationPackage)

  在 Microsoft.VisualStudio.Setup.InstallOperation.Plan()

  在 Microsoft.VisualStudio.Setup.InstallOperation.Schedule()

  在 Microsoft.VisualStudio.Setup.Engine.CreateInstallOperation(Product product, String destination, ExecuteAction action, ITelemetryOperation telemetryOperation)

  在 Microsoft.VisualStudio.Setup.Engine.Install(Product product, String destination, CancellationToken token)

Visual Studio 2019无法安装更新和卸载时。可运行Visual Studio 2019自带工具进行卸载。

Visual Studio Installer无法安装更新和卸载时。可运行Visual Studio 2019自带工具进行卸载。

C:\Program Files (x86)\Microsoft Visual Studio\Installer\resources\app\layout\InstallCleanup.exe

如果找不到，可以卸载Visual Studio Installer，重新运行https://download.visualstudio.microsoft.com/download/pr/378e5eb4-c1d7-4c05-8f5f-55678a94e7f4/e762a24a0c9567efad67d3554f283d052b98c9ba6324bf5db9160081e90d53c1/vs_Enterprise.exe