Dear all, I had this issue on my former laptop and tried to solve this with changing the bits version installed on my pc. Sadly enough I was not able to solve the problem like this. I saw though that my computer was really using a lot of memory to make POWER BI work. So I ordered a new pc with lots of memory inside to finally be able to use POWER BI, to end up with the same issues. I load two excel files into power BI, I sort some colums A to Z, and I get the error message again. Please advise, as I was so keen on using this program after a course and find me now ending up with a broken system. Thanks a lot for your help, I have now a 32 bits system of power bi and office PC is windows 10, i7 processor, 64 bits and 16GB RAM. Thought this would be sufficient and not the problem. Feedback Type: Frown (Error) Timestamp: 2019-04-11T09:39:27.7845005Z Local Time: 2019-04-11T11:39:27.7845005+02:00 Session ID: e1562d25-757f-4f5e-85e6-1480321f967b Release: December 2018 Product Version: 2.65.5313.1381 (18.12) (x86) Stack Trace: at Microsoft.Mashup.Engine1.Runtime.Keys.New(String[] keys) at Microsoft.Mashup.Engine1.Language.ValueCreator.CreateValueForRecord(IRecordExpression record) at Microsoft.Mashup.Engine1.Language.ValueCreator.CreateValueForExpression(IExpression expression) at Microsoft.Mashup.Engine1.Language.ValueCreator.CreateValueForThrow(IThrowExpression throwExpr) at Microsoft.Mashup.Engine1.Language.ValueCreator.CreateValueForExpression(IExpression expression) at Microsoft.Mashup.Engine1.Language.ValueCreator.<>c__DisplayClass4.<CreateValueForList>b__3(Int32 index) at Microsoft.Mashup.Engine1.Runtime.ListValue.DemandArrayListValue.get_Item(Int32 index) at Microsoft.Mashup.Engine1.Language.ValueCreator.<>c__DisplayClass11.<>c__DisplayClass13.<CreateValueForTable>b__10(Int32 columnIndex) at Microsoft.Mashup.Engine1.Runtime.RecordValue.DemandRecordValue.get_Item(Int32 index) at Microsoft.Mashup.Engine1.Runtime.RecordValue.get_Item(String field) at Microsoft.Mashup.Engine1.Runtime.RecordValue.Microsoft.Mashup.Engine.Interface.IRecordValue.get_Item(String index) at Microsoft.Mashup.Host.Document.FormulaResults.TypeResult.InferFieldTypes(IEngine engine, IRecordValue row, BitArray columnsToInfer) at Microsoft.Mashup.Host.Document.FormulaResults.TypeResult.InferColumnTypes(IEngine engine, ITableValue table, TypeResult[] staticColumnTypes, Int32 numberOfRowsToInspect) at Microsoft.Mashup.Host.Document.FormulaResults.TableResult..ctor(IEngine engine, IValue value) at Microsoft.Mashup.Host.Document.FormulaResult.FromValue(IEngine engine, IValue value, ITypeValue structureDefinedType) at Microsoft.Mashup.Host.Document.Evaluation.ValueEvaluationResult.get_FormulaResult() at Microsoft.Mashup.Host.Document.Preview.AnalysisPreviewResult.TryCreate(ContentStorage contentStorage, PackageEditor packageEditor, MetadataSet metadataSet, Int32 skipCount, Int32 takeCount, Nullable`1 clipCount, PreviewResult& previewResult) at Microsoft.Mashup.Host.Document.Preview.PreviewManager.TryGetPreviewResult(PackageEditor packageEditor, MetadataSet metadataSet, Int32 skipCount, Int32 takeCount, Nullable`1 clipCount, PreviewResult& previewResult) at Microsoft.Mashup.Host.Document.Preview.PreviewManager.GetPreviewResult(Trace trace, PackageEditor packageEditor, PreviewReference previewReference) at Microsoft.Mashup.Client.UI.Shared.HtmlControls.QueryStatusBarHtmlControl.<SetQueryResultDetailsUsingEvaluation>b__1(PreviewReference previewReference) at Microsoft.Mashup.Host.Document.Evaluation.PreviewEvaluationQueue.<>c__DisplayClass25.<OnPreviewComplete>b__23() at Microsoft.Mashup.Host.Document.ExceptionHandlerExtensions.HandleExceptions(IExceptionHandler exceptionHandler, Action action) OS Version: Microsoft Windows NT 10.0.17763.0 (x64 nl-NL) CLR Version: 4.7 or later [Release Number = 461814] Peak Virtual Memory: 1.65 GB Private Memory: 701 MB Peak Working Set: 711 MB IE Version: 11.134.17763.0 User ID: 040e3670-eb59-46e9-b5ee-abb5f4f21efe Workbook Package Info: 1* - nl-BE, Query Groups: 0, fastCombine: Disabled, runBackgroundAnalysis: True. Telemetry Enabled: True Model Default Mode: Empty Snapshot Trace Logs: C:\Users\amwillems\AppData\Local\Microsoft\Power BI Desktop\FrownSnapShot2099930820.zip Disabled Preview Features: PBI_shapeMapVisualEnabled MIntellisense PBI_SpanishLinguisticsEnabled PBI_PdfImport PBI_ColumnProfiling PBI_variationUIChange PBI_PythonSupportEnabled PBI_showIncrementalRefreshPolicy PBI_showManageAggregations PBI_FuzzyMatching PBI_EnableWebDiagramView PBI_improvedFilterExperience PBI_qnaLiveConnect Disabled DirectQuery Options: PBI_DirectQuery_Unrestricted TreatHanaAsRelationalSource Cloud: GlobalCloud DPI Scale: 100% Supported Services: Power BI
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