一、关闭所有杀毒软件和安全软件，包括windows自带的Defend。
二、新建文件夹，并给对应的文件夹设置对应的权限
在C盘新建两个文件夹，postinstall postdata
并将这两个文件夹赋予 Network Service 完全读取和写入权限
三、创建用户， 并使用命令行进行软件安装。
1.)Uninstall PostgreSQL
2.)Delete the postgres user if it still exists :
net user postgres /delete
3.) Create the postgres user with a password you can remember:
net user /add postgres <password>
4.) Add the postgres user to the Administrators group:
net localgroup administrators postgres /add
5.) Add the postgres user to the Power Users group
net localgroup "power users" postgres /add
6.) Run a command window as the postgres user:
runas /user:postgres cmd.exe
7.) Run the install file from within the command window.
C:Downloadpostgresql-9.4.14-1-windows-x64.exe
->his should run the installation successfully.
8.)Remove the postgres user from the Administrators group.
net localgroup administrators postgres /delete