Error 500 Internal Server Error when publishing a PBIX file

Thanks Michael_Shao,

I think Power BI used to ask me if I wanted to replace the dataset before loading. But I don't get this prompt anymore Error 500 comes up.

The Fiddler Trace shows the following.

And the Power BI Trace shows the following.

{"dt":"e","ct":1472623943,"u":"ee15a6e3-f2f0-4151-8ab1-cdf70c42d9ff","su":"a76a725a-d92a-41c2-ab66-e539c239a37f","n":"PBI.Win.UploadReportToPowerBIService","attrs":{"backendUrl":"https://api.powerbi.com/","activityId":"79bc70ab-beb9-4593-a5cf-eea4964dd4a2","requestId":"7c0485f6-b0b3-4432-8bef-0be23efa7daa","canceled":"False","httpStatusCode":"","exceptionType":"","errorCode":"","errorDetails":"","parentId":"7b788786-5e50-4c00-817b-82f8ca57b174","isError":"False","duration":"0 - 100ms","client":"WinDesktop","build":"2.38.4491.282 (PBIDesktop)","uiCulture":"en-US","clientCulture":"en-AU","isInternal":"False"}}
{"dt":"e","ct":1472623947,"u":"1e1ed5c0-f74f-4578-b7f1-78da446620ee","su":"a76a725a-d92a-41c2-ab66-e539c239a37f","n":"PBI.PQ.PublishingFailedInternal","attrs":{"backendUrl":"https://api.powerbi.com/","activityId":"79bc70ab-beb9-4593-a5cf-eea4964dd4a2","requestId":"7c0485f6-b0b3-4432-8bef-0be23efa7daa","httpStatusCode":"500","exceptionType":"Microsoft.PowerBI.Client.Windows.PowerBIService.PowerBIServiceException","errorCode":"ExcelWorkbookAlreadyImported","errorDetails":"{\"code\":\"ExcelWorkbookAlreadyImported\",\"pbi.error\":{\"code\":\"ExcelWorkbookAlreadyImported\",\"parameters\":{},\"details\":[]},\"error\":{\"code\":\"ExcelWorkbookAlreadyImported\",\"pbi.error\":{\"code\":\"ExcelWorkbookAlreadyImported\",\"parameters\":{},\"details\":[]}}}","entryPoint":"EditorRibbonButtonPowerBISharePublish","message":"UnexpectedError","activeView":"Reports","actionId":"PublishingFailedInternal","parentId":"7b788786-5e50-4c00-817b-82f8ca57b174","isError":"True","client":"WinDesktop","build":"2.38.4491.282 (PBIDesktop)","uiCulture":"en-US","clientCulture":"en-AU","isInternal":"False"}}

Sorry that I can't load this in OneDrive. Our organisation actually doesn't have OneDrive set up.

It sounds like Power BI isn't asking me whether I want to replace the dataset with the existing, anymore. Is there a way that I can re-enable this in Power BI?

I will also reinstall/repair Power BI to see if that helps.

Update: I repaired Power BI. No difference in outcome. Power BI doesn't ask if I want to replace the dataset, instead jumping straight to Error 500.