Hi I have in a Windows server 2008 SQL 2005 and SQL 2008 installed, and running both version, and I configure the Reporting services for SQL 2008. when I tried load the http://Computername/Reports or the http://computername/Reportserver have a error and this is the message in the event viewer, what I miss in the configuration? Failed to initialize the AppDomain:ReportServer_MAMAMIA_0 Exception: System.Web.HttpException Message: Could not load file or assembly 'ReportingServicesWebServer, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG)) (C:\Program Files\Microsoft SQL Server\MSRS10.MAMAMIA\Reporting Services\ReportServer\web.config line 10) StackTrace: at System.Web.Compilation.BuildManager.ReportTopLevelCompilationException() at System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() at System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters) at System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters) at System.Web.Hosting.ApplicationManager.CreateAppDomainWithHostingEnvironment(String appId, IApplicationHost appHost, HostingEnvironmentParameters hostingParameters) at System.Web.Hosting.ApplicationManager.CreateAppDomainWithHostingEnvironmentAndReportErrors(String appId, IApplicationHost appHost, HostingEnvironmentParameters hostingParameters) InnerException: System.Configuration.ConfigurationErrorsException Message: Could not load file or assembly 'ReportingServicesWebServer, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG)) (C:\Program Files\Microsoft SQL Server\MSRS10.MAMAMIA\Reporting Services\ReportServer\web.config line 10) StackTrace: at System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) at System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) at System.Web.Configuration.AssemblyInfo.get_AssemblyInternal() at System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) at System.Web.Compilation.BuildProvidersCompiler..ctor(VirtualPath configPath, Boolean supportLocalization, String outputAssemblyName) at System.Web.Compilation.ApplicationBuildProvider.GetGlobalAsaxBuildResult(Boolean isPrecompiledApp) at System.Web.Compilation.BuildManager.CompileGlobalAsax() at System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() InnerException: System.IO.FileLoadException Message: Could not load file or assembly 'ReportingServicesWebServer, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG)) StackTrace: at System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) at System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) at System.Reflection.Assembly.Load(String assemblyString) at System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) InnerException: System.ArgumentException Message: URL must be specified. StackTrace: at System.Security.Policy.PolicyLevel.GenericResolve(Evidence evidence, Boolean& allConst) at System.Security.Policy.PolicyLevel.Resolve(Evidence evidence, Int32 count, Char[] serializedEvidence) at System.Security.PolicyManager.CodeGroupResolve(Evidence evidence, Boolean systemPolicy) at System.Security.PolicyManager.ResolveHelper(Evidence evidence) at System.Security.PolicyManager.Resolve(Evidence evidence) at System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet& denied, Boolean checkExecutionPermission) at System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet& denied, Int32& securitySpecialFlags, Boolean checkExecutionPermission)

Hi Manuel, If you can access the report server at http://<webservername>/reportserver but you cannot start Report Manager, check the report server virtual directory setting in the RSReportServer.config file and verify that it is referencing a valid report server instance. For more information, see RSReportServer Configuration File. Hope this helps. Challen Fu

the problem is that I have NO access to the http://<webservername>/Reportserver Regards

so no solution was found for this? we are having on one of our srs servers after 2008 SP2 was installed. only difference is OS is server 2003