Hello All, i am facing following problem. 1. i have some exe file(for example A.exe). 2. it take input as pdf file and again give output as pdf like from command prompt. for example :- C:\>A.exe "a.pdf" "b.pdf". it perfetcly working from command prompt. my problem is that when run through php using passthruor exec command,it gives permission denied error. like this passthru('C:\inetpub\wwwroot\pdfsaveagain\PDFSaveAgain.exe "C:\inetpub\wwwroot\pdfsaveagain\1.pdf" "C:\inetpub\wwwroot\pdfsaveagain\2.pdf"'); PDFSaveAgain.exe is made using Interop.Acrobat.dll file. i assign full rights to cmd.exe also but it is not working. please anybody has any idea or suggestion,please share with us. thanks Humayoo [Non-text portions of this message have been removed]