ASP.NET 访问共享文件夹

配置代码：

var dataProtection = new Microsoft.AspNet.DataProtection.DataProtectionProvider(new DirectoryInfo(@"\\10.10.10.10\shared-auth-ticket-keys\"));

app.UseCookieAuthentication((cookieOptions) =>

{

    cookieOptions.AutomaticAuthenticate = true;

    cookieOptions.AutomaticChallenge = true;

    cookieOptions.CookieHttpOnly = true;

    cookieOptions.ExpireTimeSpan = TimeSpan.FromMinutes(43200);

    cookieOptions.LoginPath = new PathString("/account/login");

    cookieOptions.CookieName = ".CNBlogsAdCookie";

    cookieOptions.CookiePath = "/";

    cookieOptions.DataProtectionProvider = dataProtection;

});

异常信息：

[Error] An unhandled exception was thrown by the application.

System.Security.Cryptography.CryptographicException: An error occurred while trying to encrypt the provided data. Refer to the inner exception for more information. ---> System.IO.DirectoryNotFoundException: Could not find a part of the path '\\10.10.10.10\shared-auth-ticket-keys'.

   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)

   at System.IO.Directory.InternalCreateDirectory(String fullPath, String path, Object dirSecurityObj, Boolean checkHost)

   at System.IO.DirectoryInfo.Create()

   at Microsoft.AspNet.DataProtection.Repositories.FileSystemXmlRepository.<GetAllElementsCore>d__15.MoveNext()

   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)

   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)

   at Microsoft.AspNet.DataProtection.Repositories.FileSystemXmlRepository.GetAllElements()

   at Microsoft.AspNet.DataProtection.KeyManagement.XmlKeyManager.GetAllKeys()

   at Microsoft.AspNet.DataProtection.KeyManagement.KeyRingProvider.CreateCacheableKeyRingCore(DateTimeOffset now, IKey keyJustAdded)

   at Microsoft.AspNet.DataProtection.KeyManagement.KeyRingProvider.Microsoft.AspNet.DataProtection.KeyManagement.Internal.ICacheableKeyRingProvider.GetCacheableKeyRing(DateTimeOffset now)

   at Microsoft.AspNet.DataProtection.KeyManagement.KeyRingProvider.GetCurrentKeyRingCore(DateTime utcNow)

   at Microsoft.AspNet.DataProtection.KeyManagement.KeyRingProvider.GetCurrentKeyRing()

   at Microsoft.AspNet.DataProtection.KeyManagement.KeyRingBasedDataProtector.Protect(Byte[] plaintext)

   --- End of inner exception stack trace ---

   at Microsoft.AspNet.DataProtection.KeyManagement.KeyRingBasedDataProtector.Protect(Byte[] plaintext)

   at Microsoft.AspNet.Authentication.SecureDataFormat`1.Protect(TData data, String purpose)

   at Microsoft.AspNet.Authentication.Cookies.CookieAuthenticationHandler.<HandleSignInAsync>d__13.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at Microsoft.AspNet.Authentication.AuthenticationHandler`1.<SignInAsync>d__61.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at Microsoft.AspNet.Http.Authentication.Internal.DefaultAuthenticationManager.<SignInAsync>d__13.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at CNBlogs.Ad.Web.Controllers.AccountController.<LoginSubmit>d__3.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at Microsoft.AspNet.Mvc.Controllers.ControllerActionExecutor.<CastToObject>d__8`1.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at Microsoft.AspNet.Mvc.Controllers.ControllerActionInvoker.<InvokeActionAsync>d__6.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)

   at Microsoft.AspNet.Mvc.Controllers.FilterActionInvoker.<InvokeActionFilterAsync>d__42.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at Microsoft.AspNet.Mvc.Controllers.FilterActionInvoker.<InvokeAsync>d__33.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at Microsoft.AspNet.Mvc.Infrastructure.MvcRouteHandler.<InvokeActionAsync>d__8.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at Microsoft.AspNet.Builder.RouterMiddleware.<Invoke>d__4.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at Microsoft.AspNet.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at Microsoft.AspNet.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at Microsoft.AspNet.IISPlatformHandler.IISPlatformHandlerMiddleware.<Invoke>d__4.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at Microsoft.AspNet.Hosting.Internal.RequestServicesContainerMiddleware.<Invoke>d__3.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at Microsoft.AspNet.Hosting.Internal.HostingApplication.<ProcessRequestAsync>d__7.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

   at Microsoft.AspNet.Server.Kestrel.Http.Frame`1.<RequestProcessingAsync>d__3.MoveNext()

10.10.10.10 是共享文件服务器，但另一台 Web 服务器访问的时候，会出现上面的错误（文件资源管理可以直接访问）。

解决方案（参考）：

On your IIS machine, create a user called IUSER_SHARE (or whatever). Set a password!
On your network share machine, create a user called IUSER_SHARE and set the same password.
In IIS Manager, select the application pool that your web app is using (create a new one if you are using the default ones). Click on Advanced Settings in the right Actions bar. Under Process Model, change the user to IUSER_SHARE.

补充：第一、二步，在共享文件服务和 Web 服务器，分别创建一个 IUSER_SHARE 账户（密码相同），第三部需要更改 ASP.NET 应用程序池的账户（也需要新建相同的账户），示意图：

巴特西

ASP.NET 访问共享文件夹

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