Windows 7 system installation Apache_pn service failed

        Q: When I install Windows7 in the Apache program, the system prompts: "Installation apache_pn service fails, the possible reasons are as follows:.

1. Service name already exists, uninstall or use a different service name
< BR> 2. non-administrator privileges, can not operate WindowsNT service "

Please help solve

A:! this problem also occurs in Vista. The reason is that from the beginning of Vista, the User Account Control Program (UAC) appeared, which prevented the installation of the program and caused the installation to fail. To successfully install, you must first turn off user account control.

Click "Start → Run", then type "msconfig", open "System Configuration" program. In the "Tools" tab, select "Disable UAC", click "Start" to disable the user account control function, in addition to the control panel.

However, UAC can effectively prohibit the malicious program is running, it is recommended for safety reasons, Windows7 of UAC which do not fully closed, it is best to re-open after installing the software.