Cannot access excel file

Question

I\'m developing a windows service, generating a report. This report has a template. This template is prepared in an excel file. This file is copied to the output folder.

Answer 1

To safety run Office applications (Excel and others) under user service with Local system account you must know two important things: 1) In Windows Server 2008/2008 R2 you must manually create two folders: C:\Windows\system32\config\systemprofile\desktop
C:\Windows\SysWow64\config\systemprofile\desktop (for x64 version only) Without this folders you cannot correct run office Applications from Local SystemAccount

2) If you service is configured without desktop interaction then in the first time launched office application (Excel for example) freeze on user credentials dialog - you cannot see this window in this mode - to resolve this enable desctop interacting, switch to office window after you service run it and manually enter credeentials.

Other information there(use google translater to read).