com - Preview of Power Point in Sharepoint 2013 -


i developing web part using share point 2013 , visual studio 2013.i have display preview of power point file(also excel , word files).preview working fine .pdf files.so idea convert ppt file pdf file , display preview.please see code.

      microsoft.office.interop.powerpoint._application ppapplication = new      application();       presentation ppdoc = null;       ppdoc = ppapplication.presentations.open(inputfilepath);          ppdoc.saveas(outputfilepath, ppsaveasfiletype.ppsaveaspdf);

but first line of code create object generated following error. retrieving com class factory component clsid {91493441-5a91-11cf-8700-00aa0060263b} failed due following error: 80070005 access denied. (exception hresult: 0x80070005 (e_accessdenied)) followed steps in link below. "retrieving com class factory component.... error: 80070005 access denied." (exception hresult: 0x80070005 (e_accessdenied)) error changed given below. retrieving com class factory component clsid {91493441-5a91-11cf-8700-00aa0060263b} failed due following error: 80010001 call rejected callee. (exception hresult: 0x80010001 (rpc_e_call_rejected)). how can solve issue.please me.thanks in advance

i got similar error webapp using webservice on local server. webservice writing disk , error occured because application pool running webservice did not have proper read/write permissions.


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