msiexec: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/msiexec - from package: wine-common

You may install the required package with command yum install {package}
Error in other languages:
msiexec: bevel nie gevind nie
msiexec: comandă negăsită
msiexec: comando não encontrado
msiexec: commande introuvable
msiexec: command not found
msiexec: käsku ei ole
msiexec: không tìm thấy lệnh
msiexec: komanda nerasta
msiexec: Kommando nicht gefunden.
msiexec: kommandot finns inte
msiexec: komut yok
msiexec: nie znaleziono polecenia
msiexec: níor aimsíodh an t-ordú
msiexec: no se encontró la orden
msiexec: no s'ha trobat l'ordre
msiexec: opdracht niet gevonden
msiexec: parancs nem található
msiexec: perintah tidak ditemukan
msiexec: príkaz nenájdený
msiexec: příkaz nenalezen
msiexec: команда не найдена
msiexec: командата не е открита
msiexec: 命令找不到
msiexec: コマンドが見つかりません