Project requirements: Requirements can upload ppt, reception can be previewed.
In the course of the program in pdf ppt turn, encountered several problems, recorded as follows, mutual encouragement:
1, retrieves the CLSID of the COM class factory {91493441-5A91-11CF-8700-00AA0060263B} of failed components: not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))
This error, because your machine is lack of relevant components, or your office version is too low, you can install version of the high office to solve
2, the COM CLSID of the class factory {000209FF-0000-0000-C000-000000000046} component failure due to the following error: 80070005 denied access.
This error is not related to access, modify iis application pool
Reference: https://blog.csdn.net/kable999/article/details/4786654
https://q.cnblogs.com/q/32301/
https://www.cnblogs.com/coce/p/9447652.html
http://www.360doc.com/content/19/0131/17/13557244_812386459.shtml