![已解决】C#程序excel处理出错:Additional information: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' to interface type 'Microsoft.Office.Interop.Excel._Application' – 在路上 已解决】C#程序excel处理出错:Additional information: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' to interface type 'Microsoft.Office.Interop.Excel._Application' – 在路上](https://www.crifan.com/files/pic/uploads/2013/12/Unable-to-cast-COM-object-of-type-Microsoft.Office.Interop.Excel_.ApplicationClass-to-interface-t.png)
已解决】C#程序excel处理出错:Additional information: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' to interface type 'Microsoft.Office.Interop.Excel._Application' – 在路上
![Solution for 'Unable to cast COM object of type Microsoft.Office.Interop.Outlook.ApplicationClass' error Solution for 'Unable to cast COM object of type Microsoft.Office.Interop.Outlook.ApplicationClass' error](https://3.bp.blogspot.com/-m-CTQXwH6T0/WxgUyNq68aI/AAAAAAAAUHQ/i4Zb9IrHFnc5qxuiuQxWxCV1nsttePmigCLcBGAs/s1600/error-loading-type-library-hresult-0x80029c4a.jpg)
Solution for 'Unable to cast COM object of type Microsoft.Office.Interop.Outlook.ApplicationClass' error
Error in rule: "Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass'" when running a GoExcel rule in Inventor | Inventor 2018 | Autodesk Knowledge Network
![Management Reporter 2012 - Unable to cast COM object type error - Microsoft Dynamics GP Forum Community Forum Management Reporter 2012 - Unable to cast COM object type error - Microsoft Dynamics GP Forum Community Forum](https://community.dynamics.com/cfs-file.ashx/__key/communityserver-discussions-components-files/32/UnableToCast.jpg)
Management Reporter 2012 - Unable to cast COM object type error - Microsoft Dynamics GP Forum Community Forum
Unable to cast COM object of type 'System.__ComObject' to interface type 'LFSO80Lib.LFDocument'. - Laserfiche Answers
![Error: "Unable to cast COM object of type 'CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass' to interface type CrystalDecisions.ReportAppServer.Controllers.!SCRReportSource' Error: "Unable to cast COM object of type 'CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass' to interface type CrystalDecisions.ReportAppServer.Controllers.!SCRReportSource'](https://support.na.sage.com/Platform/Publishing/images/CP_CE/5961bdab-a49a-d201-5455-bbc17959aa01_image_26.4.2018.13.48.34.967.png)
Error: "Unable to cast COM object of type 'CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass' to interface type CrystalDecisions.ReportAppServer.Controllers.!SCRReportSource'
![More Information on 'Library not registered ... TYPE_E_LIBNOTREGISTERED' errors, relating to Microsoft COM "Interop assemblies" (corruption in the Windows registry) More Information on 'Library not registered ... TYPE_E_LIBNOTREGISTERED' errors, relating to Microsoft COM "Interop assemblies" (corruption in the Windows registry)](https://www.ibm.com/support/pages/system/files/inline-images/image_6053.png)
More Information on 'Library not registered ... TYPE_E_LIBNOTREGISTERED' errors, relating to Microsoft COM "Interop assemblies" (corruption in the Windows registry)
![Intermittent "Unable to cast COM object of type ... The RPC server is unavailable ... 0x800706BA" error when using Excel functions Intermittent "Unable to cast COM object of type ... The RPC server is unavailable ... 0x800706BA" error when using Excel functions](https://www.ibm.com/support/pages/system/files/support/swg/cogtech.nsf/0/c80e20d95d6557e985257ef90053839b/Symptom/0.84.gif)
Intermittent "Unable to cast COM object of type ... The RPC server is unavailable ... 0x800706BA" error when using Excel functions
![Crystal Reports Unable to Cast COM Object of Type 'ReportSourceClass' to Interface Type 'ISCRReportSource' - Tech Journey Crystal Reports Unable to Cast COM Object of Type 'ReportSourceClass' to Interface Type 'ISCRReportSource' - Tech Journey](https://cdn.techjourney.net/2019/03/crystal-reports-cast-pdf-error.png)
Crystal Reports Unable to Cast COM Object of Type 'ReportSourceClass' to Interface Type 'ISCRReportSource' - Tech Journey
![vb.net & office: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' - Stack Overflow vb.net & office: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' - Stack Overflow](https://i.stack.imgur.com/HB2Hc.png)
vb.net & office: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' - Stack Overflow
![vb.net & office: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' - Stack Overflow vb.net & office: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' - Stack Overflow](https://i.stack.imgur.com/6hfyX.png)
vb.net & office: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' - Stack Overflow
unable to cast com object of type 'system.__comobject' to interface type. Does repair/restore DB helps for this issue?
![vb.net & office: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' - Stack Overflow vb.net & office: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' - Stack Overflow](https://i.stack.imgur.com/OSzrC.png)
vb.net & office: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' - Stack Overflow
VS 2010 [RESOLVED] Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass'-VBForums
![Unable to cast COM object of type 'Microsoft.Office.Interop.Word.ApplicationClass' - RocketDocs Help Unable to cast COM object of type 'Microsoft.Office.Interop.Word.ApplicationClass' - RocketDocs Help](https://tw-desk-files.teamwork.com/i/482835/attachment-inline/174126.20181226182128997.174126.201812261821289971UYNJ.png)
Unable to cast COM object of type 'Microsoft.Office.Interop.Word.ApplicationClass' - RocketDocs Help
![unable to cast COM object of type 'microsoft.Office.Interop.Excel.ApplicationClass' to 'microsoft.Office.Interop.Excel.Application'" - Stack Overflow unable to cast COM object of type 'microsoft.Office.Interop.Excel.ApplicationClass' to 'microsoft.Office.Interop.Excel.Application'" - Stack Overflow](https://i.stack.imgur.com/8Mymj.jpg)
unable to cast COM object of type 'microsoft.Office.Interop.Excel.ApplicationClass' to 'microsoft.Office.Interop.Excel.Application'" - Stack Overflow
![Unable to cast COM object of type (No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE))) - Stack Overflow Unable to cast COM object of type (No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE))) - Stack Overflow](https://i.stack.imgur.com/BiG7I.png)