Microsoft Excel Application entry missing in DCOMCNFGIm so frustrated, I have similar issue. My app modifies a. Temp. File to the user. Microsoft codenames are the codenames given by Microsoft to products it has in development, before these products are given the names by which they appear on store. I also get the error Microsoft Excel cannot access the file error. I gave permissions like irfangani said. Ive checked permissions to the directory file. Nothing But it works great on my dev machine. How To Add Microsoft Office Interop Word In Asp Net' title='How To Add Microsoft Office Interop Word In Asp Net' />A brief guide explaining how to use Interop. Word to open and edit a DOC or DOCX file from the FileSystem or from a Byte Array using ASP. NET C. NET Core. Thanks in advance Heres the code. Build. Excel. Filestring file. Here you can learn how to add picture with hyperlink in word file using C. News View All Win Development Resources The new VB. Web services and SOA implementations in the. NET Framework OData provides patterns for HTTP, JSON, data access. Just wanted to add that a MS does not recommendsupport using serverside Office for such purposes and b advices to use OOXML for said purposes. MathType provides close integration with Microsoft Office Word and PowerPoint, letting you insert equations by clicking a button on the toolbar. ID. refstring err                    Microsoft. Office. Interop. Excel. Application o. XL. Microsoft. Office. Interop. Excel. Workbook o. WB. null            Microsoft. Office. Interop. Excel. Worksheet o. Sheet. XL. new Microsoft. Office. Interop. Excel. Application                o. XL. Visible. false                o. WB Microsoft. Office. Interop. Excel. Workbooko. XL. Workbooks. Openc tempExceptions. Magazine Cover 3 - Digital Overlays. Sheet Microsoft. Office. Interop. Excel. Worksheeto. WB. SheetsExceptions                string tempfile. ID. if int. Try. Parsefile. ID. out ID                    o. Sheet. Cells1, 3. Value ID                o. WB. Application. RunModule. Get. Exception. Data                tempfile Get. Temp. File                o. WB. Save. Astempfile, File. Format 5. 2                 Need all following code to clean up and extingush all references                o. WB. Closenull. null, null                o. XL. Workbooks. Close                o. XL. Quit                System. Runtime. Interop. Services. Marshal. Release. Com. Objecto. XL                System. Runtime. Interop. Services. Marshal. Release. Com. Objecto. Sheet                System. Runtime. Interop. Services. Marshal. Release. Com. Objecto. WB                o. Sheet. null                o. WB. null                o. XL. null. GC. Collect force final cleanup Exception e                            err e. Message. return                   . Get. Temp. File       . Date. Time. Now. Time. Of. Day. Total. Seconds. To. String. Replace.