Describes the cause and action for error messages.
Error Message(English)：
error class not registered
SSIS: Excel Connection Manager Error “Class not registered” ? Ajit Patra
https://ajitpatra.com/2018/06/13/ssis-excel-connection-manager-error-class-not-registered/
Getting error Class not registered when try to generate excel file ...
https://stackoverflow.com/questions/24528833/getting-error-class-not-registered-when-try-to-generate・・・
Export wizard error for exiting excel files in sas 9.2
https://stackoverflow.com/questions/41235215/export-wizard-error-for-exiting-excel-files-in-sas-9-2
Error while trying to create an excel file in C#
https://stackoverflow.com/questions/43209624/error-while-trying-to-create-an-excel-file-in-c-sharp
Proc Export and Proc Import XLSX in WPS/SAS
https://stackoverflow.com/questions/40684324/proc-export-and-proc-import-xlsx-in-wps-sas
Fatal Error: "Class not registered" creating COM Object
https://stackoverflow.com/questions/23690940/fatal-error-class-not-registered-creating-com-object
Lost VBA when downgrading from Excel 2013 to Excel 2010 - Super User
https://superuser.com/questions/634439/lost-vba-when-downgrading-from-excel-2013-to-excel-2010
Solved: ERROR: Class not registered. - SAS Support Communities
https://communities.sas.com/t5/SAS-Programming/ERROR-Class-not-registered/td-p/229995
[Fix It]???????? Error Class not registered ??? AutoItX3.dll ?? C#.net ...
https://www.youtube.com/watch?v=gyli9OnxqnQ