Installing NAV 2009 on the PC of Ms. JC Natividad. The exe is not working whenever I tried running it on her PC. I already checked the firewall and off it but the same problem is persisting. Then checked the windows update. I run the update after that I tried running the exe again. I asked for assistance from the infra team to try disabling the Sophos the tried running again. The exe is still not working. I tried running the exe onto another pc then the installer is running and I installed it successfully. For further checking tomorrow.