Class not Registered Error

I've been using Power BI Desktop for more than 6 months now and have created many reports in that period. But, this Tuesday I wanted to open a report I had just created and then I got a "class not registered" error. I also since then was unable to retrieve any report on the desktop and was unable to get close and apply new datasets from power query.

Please how can I get this fixed.

Here's the full error message: 

Feedback Type:

Frown (Error)

Error Message:

The following system error occurred:  Class not registered 

Stack Trace:

Microsoft.PowerBI.Client.Windows.Storage.FileOpenException

   at Microsoft.PowerBI.Client.Windows.Services.LocalAnalysisServicesDatabaseCreator.<CreateAnalysisServicesDatabaseAsync>d__6.MoveNext()

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

   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

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

   at Microsoft.PowerBI.Client.Windows.Services.AnalysisServicesDatabaseCreatorFactory.<CreateAnalysisServicesDatabaseAsync>d__1.MoveNext()

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

   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

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

   at Microsoft.PowerBI.Client.Windows.Services.ReportFactory.<CreateAndSetAnalysisServicesDatabaseToReport>d__3.MoveNext()

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

   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

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

   at Microsoft.PowerBI.Client.Windows.Services.PowerBIPackagingService.<Open>d__4.MoveNext()

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

   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

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

   at Microsoft.PowerBI.Client.Windows.Services.BiPackageOperationHandler.<LoadArtifact>d__24.MoveNext()

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

   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

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

   at Microsoft.PowerBI.Client.Windows.Services.CurrentArtifactManager.<ExecuteAndHandleFileOpenErrors>d__48.MoveNext()

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

   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

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

   at Microsoft.PowerBI.Client.Windows.Services.CurrentArtifactManager.<>c__DisplayClass33_0.<<OpenArtifactAndSetAsCurrent>b__0>d.MoveNext()

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

   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

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

   at Microsoft.PowerBI.Client.Windows.Services.UIBlockingService.<>c__DisplayClass13_0`1.<<BlockUIAndRun>b__0>d.MoveNext()

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

   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

   at Microsoft.PowerBI.Client.Windows.Services.UIBlockingService.WaitOnUIThreadForTaskCompletion[T](Task`1 task)

   at Microsoft.PowerBI.Client.Windows.Services.UIBlockingService.BlockUIAndRun[T](Func`1 asyncMethod)

   at Microsoft.PowerBI.Client.Windows.Services.CurrentArtifactManager.OpenArtifactAndSetAsCurrent(IPowerBIWindowService windowService, IPowerBIArtifact artifactToOpen, IExceptionHandler exceptionHandler, Nullable`1 entryPoint)

   at Microsoft.PowerBI.Client.Windows.Services.FileOperationUIHandler.<OpenFileInternal>d__47.MoveNext()

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

   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

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

   at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.<HandleAwaitableAsyncExceptions>d__1.MoveNext()

Stack Trace Message:

The following system error occurred:  Class not registered 

Invocation Stack Trace:

   at Microsoft.Mashup.Host.Document.ExceptionExtensions.GetCurrentInvocationStackTrace()

   at Microsoft.Mashup.Client.UI.Shared.StackTraceInfo..ctor(String exceptionStackTrace, String invocationStackTrace, String exceptionMessage)

   at Microsoft.PowerBI.Client.Windows.Telemetry.PowerBIUserFeedbackServices.GetStackTraceInfo(Exception e)

   at Microsoft.PowerBI.Client.Windows.Telemetry.PowerBIUserFeedbackServices.ReportException(IWindowHandle activeWindow, IUIHost uiHost, FeedbackPackageInfo feedbackPackageInfo, Exception e, Boolean useGDICapture)

   at Microsoft.Mashup.Client.UI.Shared.UnexpectedExceptionHandler.<>c__DisplayClass14_0.<HandleException>b__0()

   at Microsoft.Mashup.Client.UI.Shared.UnexpectedExceptionHandler.HandleException(Exception e)

   at Microsoft.PowerBI.Client.PowerBIUnexpectedExceptionHandler.HandleException(Exception e)

   at Microsoft.PowerBI.Client.Windows.Utilities.PowerBIFormUnexpectedExceptionHandler.HandleException(Exception e)

   at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.<HandleAwaitableAsyncExceptions>d__1.MoveNext()

   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine](TStateMachine& stateMachine)

   at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.HandleAwaitableAsyncExceptions(IExceptionHandler exceptionHandler, Func`1 asyncFunc)

   at Microsoft.Practices.Prism.Commands.DelegateCommandBase.<>c__DisplayClass4_0.<.ctor>b__0(Object arg)

   at Microsoft.Practices.Prism.Commands.DebouncedDelegateCommand`1.<Execute>d__3.MoveNext()

   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine](TStateMachine& stateMachine)

   at Microsoft.Practices.Prism.Commands.DebouncedDelegateCommand`1.Execute(T parameter)

   at Microsoft.PowerBI.Client.Windows.Commands.CompositeCommand`1.Execute(ICommand command, Object parameter)

   at Microsoft.Practices.Prism.Commands.CompositeCommand.Execute(Object parameter)

   at Microsoft.PowerBI.Client.Windows.Commands.CompositeCommand`1.Execute(T parameter)

   at Microsoft.PowerBI.Client.Windows.RecentFileHostService.OpenRecentFile(String id)

   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)

   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)

   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

   at Microsoft.PowerBI.Client.Windows.HostServiceDispatcher.<>c__DisplayClass15_0.<ExecuteInteropCsMethod>b__0()

   at Microsoft.PowerBI.Client.Windows.HostServiceDispatcher.<>c__DisplayClass16_0`1.<RunAsync>b__0(Object s)

   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)

   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)

   at System.Delegate.DynamicInvokeImpl(Object[] args)

   at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)

   at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)

   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

   at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)

   at System.Windows.Forms.Control.InvokeMarshaledCallbacks()

   at System.Windows.Forms.Control.WndProc(Message& m)

   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)

   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)

   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)

   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)

   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)

   at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)

   at Microsoft.Mashup.Client.UI.Shared.WindowManager.ShowModal[T](T dialog, Func`1 showModalFunction)

   at Microsoft.PowerBI.Client.Program.<>c__DisplayClass6_0.<RunApplication>b__0()

   at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.<>c__DisplayClass3_0.<HandleExceptionsWithNestedTasks>b__0()

   at Microsoft.Mashup.Host.Document.ExceptionHandlerExtensions.HandleExceptions(IExceptionHandler exceptionHandler, Action action)

   at Microsoft.PowerBI.Client.Program.RunApplication(String[] args)

   at Microsoft.PowerBI.Client.Program.Main(String[] args)

PowerBINonFatalError:

{"AppName":"PBIDesktop","AppVersion":"2.127.1080.0","ModuleName":"Microsoft.PowerBI.Client.Windows.dll","Component":"Microsoft.PowerBI.Client.Windows.Services.LocalAnalysisServicesDatabaseCreator+<CreateAnalysisServicesDatabaseAsync>d__6","Error":"Microsoft.PowerBI.Client.Windows.Storage.FileOpenException","MethodDef":"MoveNext - PFE_SYSTEM","ErrorOffset":"508","ErrorCode":"DataModelLoadFailed"}

InnerException0.Stack Trace Message:

The following system error occurred:  Class not registered 

InnerException0.Stack Trace:

   at Microsoft.PowerBI.Client.Windows.AnalysisServices.AnalysisServicesService.ExecuteXmla(String xmla)

   at Microsoft.PowerBI.Client.Windows.AnalysisServices.AnalysisServicesService.ImageLoadDatabaseFromPbix(String databaseName, String filePath, Uri dataModelPath)

   at Microsoft.PowerBI.Client.Windows.AnalysisServices.AnalysisServicesService.LoadDatabaseFromPbix(String filePath, Uri dataModelPath)

   at Microsoft.PowerBI.Client.Windows.Services.LocalAnalysisServicesDatabaseCreator.<CreateAnalysisServicesDatabaseAsync>d__6.MoveNext()

InnerException0.Invocation Stack Trace:

   at Microsoft.Mashup.Host.Document.ExceptionExtensions.GetCurrentInvocationStackTrace()

   at Microsoft.Mashup.Client.UI.Shared.FeedbackErrorInfo.GetFeedbackValuesFromException(Exception e, String prefix)

   at Microsoft.Mashup.Client.UI.Shared.FeedbackErrorInfo.GetFeedbackValuesFromInnerExceptions(Exception e, Int32 depth)

   at Microsoft.Mashup.Client.UI.Shared.FeedbackErrorInfo.CreateAdditionalErrorInfo(Exception e)

   at Microsoft.Mashup.Client.UI.Shared.FeedbackErrorInfo..ctor(String message, Exception exception, Nullable`1 stackTraceInfo, String messageDetail)

   at Microsoft.PowerBI.Client.Windows.Telemetry.PowerBIUserFeedbackServices.ReportException(IWindowHandle activeWindow, IUIHost uiHost, FeedbackPackageInfo feedbackPackageInfo, Exception e, Boolean useGDICapture)

   at Microsoft.Mashup.Client.UI.Shared.UnexpectedExceptionHandler.<>c__DisplayClass14_0.<HandleException>b__0()

   at Microsoft.Mashup.Client.UI.Shared.UnexpectedExceptionHandler.HandleException(Exception e)

   at Microsoft.PowerBI.Client.PowerBIUnexpectedExceptionHandler.HandleException(Exception e)

   at Microsoft.PowerBI.Client.Windows.Utilities.PowerBIFormUnexpectedExceptionHandler.HandleException(Exception e)

   at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.<HandleAwaitableAsyncExceptions>d__1.MoveNext()

   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine](TStateMachine& stateMachine)

   at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.HandleAwaitableAsyncExceptions(IExceptionHandler exceptionHandler, Func`1 asyncFunc)

   at Microsoft.Practices.Prism.Commands.DelegateCommandBase.<>c__DisplayClass4_0.<.ctor>b__0(Object arg)

   at Microsoft.Practices.Prism.Commands.DebouncedDelegateCommand`1.<Execute>d__3.MoveNext()

   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine](TStateMachine& stateMachine)

   at Microsoft.Practices.Prism.Commands.DebouncedDelegateCommand`1.Execute(T parameter)

   at Microsoft.PowerBI.Client.Windows.Commands.CompositeCommand`1.Execute(ICommand command, Object parameter)

   at Microsoft.Practices.Prism.Commands.CompositeCommand.Execute(Object parameter)

   at Microsoft.PowerBI.Client.Windows.Commands.CompositeCommand`1.Execute(T parameter)

   at Microsoft.PowerBI.Client.Windows.RecentFileHostService.OpenRecentFile(String id)

   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)

   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)

   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

   at Microsoft.PowerBI.Client.Windows.HostServiceDispatcher.<>c__DisplayClass15_0.<ExecuteInteropCsMethod>b__0()

   at Microsoft.PowerBI.Client.Windows.HostServiceDispatcher.<>c__DisplayClass16_0`1.<RunAsync>b__0(Object s)

   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)

   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)

   at System.Delegate.DynamicInvokeImpl(Object[] args)

   at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)

   at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)

   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

   at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)

   at System.Windows.Forms.Control.InvokeMarshaledCallbacks()

   at System.Windows.Forms.Control.WndProc(Message& m)

   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)

   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)

   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)

   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)

   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)

   at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)

   at Microsoft.Mashup.Client.UI.Shared.WindowManager.ShowModal[T](T dialog, Func`1 showModalFunction)

   at Microsoft.PowerBI.Client.Program.<>c__DisplayClass6_0.<RunApplication>b__0()

   at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.<>c__DisplayClass3_0.<HandleExceptionsWithNestedTasks>b__0()

   at Microsoft.Mashup.Host.Document.ExceptionHandlerExtensions.HandleExceptions(IExceptionHandler exceptionHandler, Action action)

   at Microsoft.PowerBI.Client.Program.RunApplication(String[] args)

   at Microsoft.PowerBI.Client.Program.Main(String[] args)

Snapshot Trace Logs:

C:\Users\kingr\Microsoft\Power BI Desktop Store App\FrownSnapShot07a4b98c-30e5-4273-8e18-a9e6beaf98cd.zip

Model Default Mode:

Empty

Model Version:

PowerBI_V1

Performance Trace Logs:

C:\Users\kingr\Microsoft\Power BI Desktop Store App\PerformanceTraces.zip

Enabled Preview Features:

PBI_shapeMapVisualEnabled

PBI_qnaLiveConnect

PBI_b2bExternalDatasetSharing

PBI_enhancedTooltips

PBI_sparklines

PBI_scorecardVisual

PBI_NlToDax

PBI_fieldParametersSuperSwitch

PBI_angularRls

PBI_onObject

PBI_backstageUI

PBI_setLabelOnExportPdf

PBI_dynamicFormatString

PBI_oneDriveSave

PBI_oneDriveShare

PBI_useModernPublishDialogs

PBI_gitIntegration

PBI_newCard

PBI_buttonSlicerAuthoring

PBI_modelExplorer

PBI_mobileAutoReportLayout

PBI_daxQueryView

PBI_daxInlineCopilot

PBI_aiNarrativesVisual

PBI_qnaImproveLsdlCopilot

PBI_generateMeasureDescriptionsButton

PBI_visualCalculationsAuthoring

Disabled Preview Features:

PBI_SpanishLinguisticsEnabled

PBI_tmdlInDataset

PBI_EimLessElevatedUser

Disabled DirectQuery Options:

TreatHanaAsRelationalSource

Cloud:

GlobalCloud

PowerBINonFatalError_ErrorCode:

DataModelLoadFailed

PowerBINonFatalError_MethodDefDescription:

PFE_SYSTEM

PowerBIUserFeedbackServices_IsReported:

True

InnerException0.PowerBINonFatalError_ErrorDescription:

PFE_SYSTEM

InnerException0.PowerBINonFatalError_MethodDefDescription:

PFE_SYSTEM

Formulas:

section Section1;