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Exception message: Font family 'Arial' has no available styles with Telerik Reporting 12.1.18.620 on IIS 8.0.9200.16384

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Report Viewer - HTML5 WebForms
Chris
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Chris asked on 01 Mar 2023, 12:01 AM | edited on 01 Mar 2023, 12:01 AM

Telerik Reporting is crashing with "Exception message: Font family 'Arial' has no available style"

This is an MVC asp.net framework 4 application using  Telerik Reporting 12.1.18.620 and running in server 2012 via IIS 8.0.9200.16384

There is another app pool on the same server and we installed the same application for a test, and it does not exhibit this issue.

The font does appear to be installed, if we check the Windows fonts.

We have recycled the app pool with this app and the error persists.  We have not rebooted the machine.  We have not re-installed the problematic app yet.

Is there a troubleshooting procedure or steps to correct this issue?

 

Event code: 3005 
Event message: An unhandled exception has occurred. 
Event time: 2/28/2023 6:49:14 PM 
Event time (UTC): 2/28/2023 11:49:14 PM 
Event ID: d6a7d520b6674898aff8ca5c2fdedabd 
Event sequence: 21426 
Event occurrence: 76 
Event detail code: 0 

Application information: 
    Application domain: /LM/W3SVC/2/ROOT-1-133220978654400636 
    Trust level: Full 
    Application Virtual Path: / 
    Application Path: C:\inetpub\wwwroot\xxx\ 
    Machine name: PSE 

Process information: 
    Process ID: 12616 
    Process name: w3wp.exe 
    Account name: IIS APPPOOL\xxx

Exception information: 
    Exception type: ArgumentException 
    Exception message: Font family 'Arial' has no available styles
   at Telerik.Reporting.Drawing.FontExtensions.GetDefaultFontStyle(FontFamily fontFamily) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing.Common\FontExtensions.cs:line 108
   at Telerik.Reporting.Drawing.FontExtensions.GetStyle(IFont font) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing.Common\FontExtensions.cs:line 37
   at Telerik.Reporting.Drawing.FontExtensions.ToGdiFont(IFont font) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing.Common\FontExtensions.cs:line 58
   at Telerik.Reporting.Processing.GdiFontInfoCache.CreateValue(IFont font) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\GdiFontCache.cs:line 54
   at Telerik.Reporting.Processing.GdiFontCache`1.GetValue(IFont font) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\GdiFontCache.cs:line 91
   at Telerik.Reporting.Processing.MeasureContext.CalculateLineHeight(IFont font) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\MeasureContext.cs:line 99
   at Telerik.Reporting.Processing.TextRenderer.MeasureText(IMeasureContext context, String text, IFont font, RectangleF layoutRectangle, TextFormat textFormat, Boolean multiline, Int32& charactersFitted) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\TextRenderer.cs:line 147
   at Telerik.Reporting.Processing.TextBoxUtil.MeasureTextContainer(ITextContainer textContainer, RectangleF layoutBounds, IMeasureContext context) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\TextBoxUtil.cs:line 95
   at Telerik.Reporting.Processing.TextBox.MeasureItem(IMeasureContext context, SizeLU availableClientSize, Boolean canGrow) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\TextBox.cs:line 204
   at Telerik.Reporting.Processing.TextBox.MeasureItem(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\TextBox.cs:line 134
   at Telerik.Reporting.Processing.TextBox.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\TextBox.cs:line 125
   at Telerik.Reporting.Processing.LayoutElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\LayoutElement.cs:line 125
   at Telerik.Reporting.Processing.VisualElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\VisualElement.cs:line 343
   at Telerik.Reporting.Processing.ProcessingElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\ProcessingElement.Layout.cs:line 13
   at Telerik.Reporting.Processing.AbsolutePositionLayout.MeasureChildItems(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\AbsolutePositionLayout.cs:line 296
   at Telerik.Reporting.Processing.AbsolutePositionLayout.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\AbsolutePositionLayout.cs:line 43
   at Telerik.Reporting.Processing.Panel.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\Panel.cs:line 113
   at Telerik.Reporting.Processing.LayoutElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\LayoutElement.cs:line 125
   at Telerik.Reporting.Processing.VisualElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\VisualElement.cs:line 343
   at Telerik.Reporting.Processing.ProcessingElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\ProcessingElement.Layout.cs:line 13
   at Telerik.Reporting.Processing.AbsolutePositionLayout.MeasureChildItems(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\AbsolutePositionLayout.cs:line 296
   at Telerik.Reporting.Processing.AbsolutePositionLayout.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\AbsolutePositionLayout.cs:line 43
   at Telerik.Reporting.Processing.ReportSectionBase.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\ReportSectionBase.cs:line 165
   at Telerik.Reporting.Processing.LayoutElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\LayoutElement.cs:line 125
   at Telerik.Reporting.Processing.VisualElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\VisualElement.cs:line 343
   at Telerik.Reporting.Processing.ProcessingElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\ProcessingElement.Layout.cs:line 13
   at Telerik.Reporting.Processing.StackLayout.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\StackLayout.cs:line 27
   at Telerik.Reporting.Processing.Group.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\Group.cs:line 204
   at Telerik.Reporting.Processing.LayoutElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\LayoutElement.cs:line 125
   at Telerik.Reporting.Processing.VisualElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\VisualElement.cs:line 343
   at Telerik.Reporting.Processing.ProcessingElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\ProcessingElement.Layout.cs:line 13
   at Telerik.Reporting.Processing.StackLayout.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\StackLayout.cs:line 27
   at Telerik.Reporting.Processing.Report.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\Report.Layout.cs:line 41
   at Telerik.Reporting.Processing.LayoutElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\LayoutElement.cs:line 125
   at Telerik.Reporting.Processing.VisualElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBu



Request information: 
    Request URL: https://xxx.com:443/Telerik.ReportViewer.axd?instanceID=db033a11a4b84ec385f5c117de2d43d5&optype=Report&PageIndex=0&RenderID=1759b172aa0945aa858db8bf20357481&RenderingFormat=HTML5Interactive 
    Request path: /Telerik.ReportViewer.axd 
    User host address: 107.129.213.166 
    User:  
    Is authenticated: False 
    Authentication Type:  
    Thread account name: IIS APPPOOL\xxx

Thread information: 
    Thread ID: 56 
    Thread account name: IIS APPPOOL\xxx
    Is impersonating: False 
    Stack trace:    at Telerik.Reporting.Drawing.FontExtensions.GetDefaultFontStyle(FontFamily fontFamily) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing.Common\FontExtensions.cs:line 108
   at Telerik.Reporting.Drawing.FontExtensions.GetStyle(IFont font) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing.Common\FontExtensions.cs:line 37
   at Telerik.Reporting.Drawing.FontExtensions.ToGdiFont(IFont font) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing.Common\FontExtensions.cs:line 58
   at Telerik.Reporting.Processing.GdiFontInfoCache.CreateValue(IFont font) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\GdiFontCache.cs:line 54
   at Telerik.Reporting.Processing.GdiFontCache`1.GetValue(IFont font) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\GdiFontCache.cs:line 91
   at Telerik.Reporting.Processing.MeasureContext.CalculateLineHeight(IFont font) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\MeasureContext.cs:line 99
   at Telerik.Reporting.Processing.TextRenderer.MeasureText(IMeasureContext context, String text, IFont font, RectangleF layoutRectangle, TextFormat textFormat, Boolean multiline, Int32& charactersFitted) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\TextRenderer.cs:line 147
   at Telerik.Reporting.Processing.TextBoxUtil.MeasureTextContainer(ITextContainer textContainer, RectangleF layoutBounds, IMeasureContext context) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\TextBoxUtil.cs:line 95
   at Telerik.Reporting.Processing.TextBox.MeasureItem(IMeasureContext context, SizeLU availableClientSize, Boolean canGrow) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\TextBox.cs:line 204
   at Telerik.Reporting.Processing.TextBox.MeasureItem(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\TextBox.cs:line 134
   at Telerik.Reporting.Processing.TextBox.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\TextBox.cs:line 125
   at Telerik.Reporting.Processing.LayoutElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\LayoutElement.cs:line 125
   at Telerik.Reporting.Processing.VisualElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\VisualElement.cs:line 343
   at Telerik.Reporting.Processing.ProcessingElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\ProcessingElement.Layout.cs:line 13
   at Telerik.Reporting.Processing.AbsolutePositionLayout.MeasureChildItems(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\AbsolutePositionLayout.cs:line 296
   at Telerik.Reporting.Processing.AbsolutePositionLayout.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\AbsolutePositionLayout.cs:line 43
   at Telerik.Reporting.Processing.Panel.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\Panel.cs:line 113
   at Telerik.Reporting.Processing.LayoutElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\LayoutElement.cs:line 125
   at Telerik.Reporting.Processing.VisualElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\VisualElement.cs:line 343
   at Telerik.Reporting.Processing.ProcessingElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\ProcessingElement.Layout.cs:line 13
   at Telerik.Reporting.Processing.AbsolutePositionLayout.MeasureChildItems(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\AbsolutePositionLayout.cs:line 296
   at Telerik.Reporting.Processing.AbsolutePositionLayout.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\AbsolutePositionLayout.cs:line 43
   at Telerik.Reporting.Processing.ReportSectionBase.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\ReportSectionBase.cs:line 165
   at Telerik.Reporting.Processing.LayoutElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\LayoutElement.cs:line 125
   at Telerik.Reporting.Processing.VisualElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\VisualElement.cs:line 343
   at Telerik.Reporting.Processing.ProcessingElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\ProcessingElement.Layout.cs:line 13
   at Telerik.Reporting.Processing.StackLayout.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\StackLayout.cs:line 27
   at Telerik.Reporting.Processing.Group.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\Group.cs:line 204
   at Telerik.Reporting.Processing.LayoutElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\LayoutElement.cs:line 125
   at Telerik.Reporting.Processing.VisualElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\VisualElement.cs:line 343
   at Telerik.Reporting.Processing.ProcessingElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\ProcessingElement.Layout.cs:line 13
   at Telerik.Reporting.Processing.StackLayout.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\StackLayout.cs:line 27
   at Telerik.Reporting.Processing.Report.MeasureContent(IMeasureContext context, SizeLU availableClientSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\Report.Layout.cs:line 41
   at Telerik.Reporting.Processing.LayoutElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\LayoutElement.cs:line 125
   at Telerik.Reporting.Processing.VisualElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\VisualElement.cs:line 343
   at Telerik.Reporting.Processing.ProcessingElement.MeasureCore(IMeasureContext context, SizeLU availableSize) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\ProcessingElement.Layout.cs:line 13
   at Telerik.Reporting.Processing.LayoutElement.MeasureElement(LayoutElement elementToMeasure, SizeLU availableSize, IMeasureContext context) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\LayoutElement.cs:line 93
   at Telerik.Reporting.Processing.LayoutElement.MeasureElement(LayoutElement elementToMeasure, IMeasureContext context) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing\LayoutElement.cs:line 80
   at Telerik.Reporting.Html5Rendering.Html5ReportInteractive.MeasureRootCore(LayoutElement root, PageSettings pageSettings) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Html5Rendering\Html5ReportInteractive.cs:line 23
   at Telerik.Reporting.BaseRendering.RenderingExtensionBase.Render(LayoutElement root, Hashtable renderingContext, Hashtable deviceInfo, CreateStream createStreamCallback, EvaluateHeaderFooterExpressions evalHeaderFooterCallback, PageSettings pageSettings) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.BaseRendering\RenderingExtensionBase.cs:line 94
   at Telerik.Reporting.BaseRendering.RenderingExtensionBase.Render(Report report, Hashtable renderingContext, Hashtable deviceInfo, CreateStream createStreamCallback, EvaluateHeaderFooterExpressions evalHeaderFooterCallback) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.BaseRendering\RenderingExtensionBase.cs:line 43
   at Telerik.Reporting.Processing.ReportProcessor.RenderCore(ExtensionInfo extensionInfo, IList`1 processingReports, Hashtable deviceInfo, IRenderingContext renderingContext, CreateStream createStreamCallback) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing.ReportProcessor\ReportProcessor.RenderReport.cs:line 236
   at Telerik.Reporting.Processing.ReportProcessor.RenderCore(String format, IList`1 reports, Hashtable deviceInfo, IRenderingContext renderingContext, CreateStream createStreamCallback) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.Reporting.Processing.ReportProcessor\ReportProcessor.RenderReport.cs:line 157
   at Telerik.ReportViewer.WebForms.ReportPageOperation.RenderReport(String format, IList`1 processingReports, Hashtable deviceInfo, IRenderingContext renderingContext) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.ReportViewer.WebForms\ReportPageOperation.cs:line 54
   at Telerik.ReportViewer.WebForms.ReportRenderOperation.PerformOperationOverride() in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.ReportViewer.WebForms\ReportRenderOperation.cs:line 66
   at Telerik.ReportViewer.WebForms.ReportPageOperation.PerformOperationOverride() in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.ReportViewer.WebForms\ReportPageOperation.cs:line 134
   at Telerik.ReportViewer.WebForms.HandlerOperation.PerformOperation(HttpContext context, ICacheManager cacheManager) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.ReportViewer.WebForms\HandlerOperation.cs:line 47
   at Telerik.ReportViewer.WebForms.BasicHandler.ProcessRequest(HttpContext context) in c:\temp\reporting\RBuild-31962\Reporting_Build\Source\Code\Telerik.ReportViewer.WebForms\HttpHandler.cs:line 190
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)


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answered on 01 Mar 2023, 02:05 PM
We rebooted the machine and have not seen the error again.
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