今天我在使用工具箱里面的“邮件跟踪”工具时遇到了以下错误，不管怎么样就是不能正常打开WEB管理页面，还请各位帮忙看看，想想解决办法。
========================================
“/ecp”应用程序中的服务器错误。
无法访问已关闭的资源集。
说明: 执行当前
Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。
异常详细信息:
System.ObjectDisposedException: 无法访问已关闭的资源集。
源错误:
执行当前 Web 请求期间生成了未处理的异常。可以使用下面的异常堆栈跟踪信息确定有关异常原因和发生位置的信息。
堆栈跟踪:
[ObjectDisposedException: 无法访问已关闭的资源集。]System.Resources.RuntimeResourceSet.GetObject(String key, Boolean ignoreCase, Boolean isString) +1657System.Resources.RuntimeResourceSet.GetString(String key, Boolean ignoreCase) +12System.Resources.ResourceManager.GetString(String name, CultureInfo culture) +278Microsoft.Exchange.Data.Common.ExchangeResourceManager.GetString(String name, CultureInfo culture) +174Microsoft.Exchange.Data.Common.LocalizedString.System.IFormattable.ToString(String format, IFormatProvider formatProvider) +179Microsoft.Exchange.Data.Common.LocalizedString.ToString() +136Microsoft.Exchange.Data.Common.LocalizedException..ctor(LocalizedString localizedString, Exception innerException) +125Microsoft.Exchange.Data.Common.LocalizedException..ctor(LocalizedString localizedString) +117Microsoft.Exchange.Data.Storage.AdUserNotFoundException..ctor(String errMessage) +537Microsoft.Exchange.Data.Storage.ExchangePrincipal..ctor(ADUser user, ADObjectId mdb, DatabaseLocationInfo databaseLocationInfo, RemotingOptions remotingOptions, Boolean asArchive) +3276Microsoft.Exchange.Data.Storage.ExchangePrincipal.InternalFromADUser(ADUser user, RemotingOptions remotingOptions) +357Microsoft.Exchange.Data.Storage.ExchangePrincipal.FromUserSid(ADRecipientSession recipientSession, SecurityIdentifier userSid, RemotingOptions remotingOptions) +232Microsoft.Exchange.Data.Storage.ExchangePrincipal.FromUserSid(ADSessionSettings adSettings, SecurityIdentifier userSid, RemotingOptions remotingOptions) +131Microsoft.Exchange.Data.Storage.ExchangePrincipal.FromUserSid(SecurityIdentifier userSid) +40Microsoft.Exchange.Management.ControlPanel.EcpIdentity.GetLogonUserExchangePrincipal() +67Microsoft.Exchange.Management.ControlPanel.RbacSettings.get_TenantNameForMonitoringPurpose() +16Microsoft.Exchange.Management.ControlPanel.RbacContext.CreateSession() +114Microsoft.Exchange.Management.ControlPanel.RbacSettings.CreateSession() +313Microsoft.Exchange.Management.ControlPanel.AuthenticationSettings..ctor(HttpContext context) +357Microsoft.Exchange.Management.ControlPanel.RbacModule.Application_PostAuthenticateRequest(Object sender, EventArgs e) +257System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +80System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +171
