Can't access domains emails area

[freshadmin]

i need to create a new email for a cliente of mine and everytime i try to access the domains emails area i get this error:

"MailManager encounter an error: mailmng failed: Error 5 at CreateProcess 'C:\WINDOWS\system32\cmd.exe /c ""C:\PROGRA~1\SWsoft\Plesk\admin\bin\mailmng.exe" "--features""': Access ‚ denied. at execute console command --features(vconsoleapp::start line 124) at execute C:\PROGRA~1\SWsoft\Plesk/admin/bin/mailmng "--features"(vconsoleapp::run line 134)

--------------------------------------------------------------------------------
0: C:\Program Files\SWsoft\Plesk\admin\plib\class.MailManager.php:52 psaerror(string "MailManager encounter an error: mailmng failed: Error 5 at CreateProcess 'C:\WINDOWS\system32\cmd.exe /c ""C:\PROGRA~1\SWsoft\Plesk\admin\bin\mailmng.exe" "--features""': O acesso ‚ negado. at execute console command --features(vconsoleapp::start line 124) at execute C:\PROGRA~1\SWsoft\Plesk/admin/bin/mailmng "--features"(vconsoleapp::run line 134)")
1: C:\Program Files\SWsoft\Plesk\admin\plib\class.DSMail.php:239 mailmanagermaker()
2: C:\Program Files\SWsoft\Plesk\admin\htdocs\domains\mail\mail_names.php:32 dsmail->create()"