为什么在升级到 OEM 2020 CR Runtime 64 位版本后在新服务器上运行时会出现此 Crystal Reports 错误？

Question

Trying to access Crystal Report through ASP.NET Web Forms application and get the following error when trying to run the report.

System.Runtime.InteropServices.COMException: Retrieving the COM class factory for component with CLSID {C0C99FA5-E1D3-494E-BE0C-73C19424F91C} failed due to the following error: 8007007f The specified procedure could not be found. (Exception from HRESULT: 0x8007007F).

I confirmed:

• SAP Crystal Report Application Server OEM 2020 is installed, licensed, and running - I can connect to the port, service is running in the Configuration Manager tool
• CR Runtime 64-bit components are installed on web server and match the version
• IIS web app is working fine, and is 64-bit (Enable 32-bit applications is False in the web application's Application Pool) - all pages and content works except for Crystal Reports integration
• ODBC connections are created for SQL Server as 64-bit (the rest of the ASP.NET Web app uses this connection just fine - gets data, confirmed correct DBMS and schema is used, etc.)
• Installed the VS Redist for this version, per the SAP PDF instructions on their website for 2020 OEM edition

Answer 1

If you had googled that error you would probably have found out it's because Office is not installed on your server. For a very good reason. Microsoft does not support Office applications used in this manner. You will have to find some way else to do whatever it is that you are trying to do.