ASP MVC 5应用程序停止使用"System.Security.SecurityException'

部分解决了我点击保存的那一刻:失败解决方案的"异常"设置被设置为"公共语言运行时异常"。将它们重置为默认值允许项目启动。

这似乎是一个解决方案级别的问题。

我有六个项目的解决方案，其中包括一个创建为MVC项目的web项目。

我没有做任何改动。它已经在解决方案中几个月了。

今天它不再运行。最初，它抛出了一个异常，表示它无法访问临时ASP。. NET文件在可笑的默认位置C:'Windows…所以我通过添加tempDirectory="…"

下一个出现的异常是:

System.Security.SecurityException occurred
Message: Exception thrown: 'System.Security.SecurityException' in mscorlib.dll
Additional information: Requested registry access is not allowed.

此时的堆栈跟踪是:

mscorlib.dll!System.ThrowHelper.ThrowSecurityException(System.ExceptionResource resource)   Unknown
mscorlib.dll!Microsoft.Win32.RegistryKey.OpenSubKey(string name, bool writable) Unknown
mscorlib.dll!Microsoft.Win32.RegistryKey.OpenSubKey(string name)    Unknown
System.Web.dll!System.Web.Util.Misc.OpenAspNetRegKey(string subKey) Unknown
System.Web.dll!System.Web.Util.Misc.GetAspNetRegValue(string subKey, string valueName, object defaultValue) Unknown
System.Web.dll!System.Web.Compilation.CompilationMutex.CompilationMutex(string name, string comment)    Unknown
System.Web.dll!System.Web.Compilation.CompilationLock.CompilationLock() Unknown
[Native to Managed Transition]  
[Managed to Native Transition]  
System.Web.dll!System.Web.Compilation.CompilationLock.GetLock(ref bool gotLock) Unknown
System.Web.dll!System.Web.Compilation.BuildManager.CheckTopLevelFilesUpToDate(long cachedHash)  Unknown
System.Web.dll!System.Web.Compilation.BuildManager.ExecutePreAppStart() Unknown
System.Web.dll!System.Web.Hosting.HostingEnvironment.Initialize(System.Web.Hosting.ApplicationManager appManager, System.Web.Hosting.IApplicationHost appHost, System.Web.Configuration.IConfigMapPathFactory configMapPathFactory, System.Web.Hosting.HostingEnvironmentParameters hostingParameters, System.Security.Policy.PolicyLevel policyLevel, System.Exception appDomainCreationException) Unknown
System.Web.dll!System.Web.Hosting.HostingEnvironment.Initialize(System.Web.Hosting.ApplicationManager appManager, System.Web.Hosting.IApplicationHost appHost, System.Web.Configuration.IConfigMapPathFactory configMapPathFactory, System.Web.Hosting.HostingEnvironmentParameters hostingParameters, System.Security.Policy.PolicyLevel policyLevel)  Unknown
[AppDomain (DefaultDomain, #1) -> AppDomain (/LM/W3SVC/2/ROOT-1-130855931402033459, #2)]    
System.Web.dll!System.Web.Hosting.ApplicationManager.CreateAppDomainWithHostingEnvironment(string appId, System.Web.Hosting.IApplicationHost appHost, System.Web.Hosting.HostingEnvironmentParameters hostingParameters)    Unknown
System.Web.dll!System.Web.Hosting.ApplicationManager.CreateAppDomainWithHostingEnvironmentAndReportErrors(string appId, System.Web.Hosting.IApplicationHost appHost, System.Web.Hosting.HostingEnvironmentParameters hostingParameters) Unknown
System.Web.dll!System.Web.Hosting.ApplicationManager.GetAppDomainWithHostingEnvironment(string appId, System.Web.Hosting.IApplicationHost appHost, System.Web.Hosting.HostingEnvironmentParameters hostingParameters)   Unknown
System.Web.dll!System.Web.Hosting.ApplicationManager.CreateObjectInternal(string appId, System.Type type, System.Web.Hosting.IApplicationHost appHost, bool failIfExists, System.Web.Hosting.HostingEnvironmentParameters hostingParameters)    Unknown
System.Web.dll!System.Web.Hosting.ProcessHost.StartApplication(string appId, string appPath, out object runtimeInterface)   Unknown

如果我用一个web MVC web项目创建一个新的解决方案并运行它，它会正确启动，显示标准模板。

如果我在现有解决方案中添加一个新项目并运行它，它不会运行!它抛出相同的访问异常。

如果我将现有的失败项目添加到新的工作解决方案中，它就可以工作了!!

我试过删除所有的临时asp.net文件，所有的临时文件，停止的东西，重新启动。没有什么工作。

这就好像由于某种原因，解决方案开始时的权限较少。我没有以管理员身份运行这两个实例，并使用相同的快捷图标来启动VS.

这是Visual Studio 2015。框架设置为4.51

有线索吗?

Computer'HKEY_LOCAL_MACHINE'SOFTWARE'Microsoft'ASP.NET