Installation par windows 7 ( en anglais)

When log in DVR via IE9【Log in failed, please check your network environment】

Solution:
1, Open IE
2, Press 【Alt】 to IE menu

1、 chooose【Tools】->【Compatibility View Settings】，choose 【Display all websites in Compatibility View】 press【close】
2、 Choose【Tools】->【 Internet option】->【Safe】，make the safety level to the lowest, press【OK】

3、 Close network firewall
4、 Re-open the IE