NSIS Error --Installer integrity check has failed

NSIS (Nullsoft Scriptable Install System) is a professional open source system to create Windows installers.

NSIS developed the "envelope" that contains the software you are attempting to install, not the software itself. This allows any software developer to use NSIS to ease the process of installing software.

NSIS Error Messages:
- Installer integrity check has failed. Common causes include
incomplete download and damaged media.
- The installer you are trying to use is corrupted or incomplete.
This could be the result of a damaged disk, a failed download or a virus.

How to fix the problem?

* If the software was obtained from the Internet:

- Clear your browser's cache. 清空浏览器缓存
- Disable any download accelerators or managers and download the installer again.  不要使用任何下载加速器，尝试重新下载
- Rename the installer so it is a simple one-word name with no special characters (without removing the .exe suffix) Example: install.exe 重新命名安装包文件名
- Download the installer from another source approved by the software developer or publisher. (It might be corrupted on the server, or the connection to the server is unreliable from your location.) 尝试引用其他地址的下载源
- Update your anti-virus software (if installed) and download the installer again. 更新你的杀毒软件再重新下载
- Disable your anti-virus software and download the installer again.  关闭你的杀毒软件再重新下载
- Download the installer using another computer and copy it to the original computer. 用另一台机器下载
- If you have the nVidia firewall installed, uninstall the program and download the installer again. 如果有nvidia防火墙，请卸载并重新下载
- Scan for, and remove malware and viruses on your system.  从你的机器上移除杀毒软件
- Scan the hard drive using scandisk, chkdsk, or any other hard drive repair tool. 尝试其他的硬件驱动或驱动修复工具

ps:E文不好，尝试翻译一下

出现这种情况，最好在官网提供md5码的验证和md5工具，如果有能力，最好能把md5的验证功能做到安装包里去

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* If the software was obtained from a CD, DVD, or other physical media:

If you are receiving this problem from an installer located on a disc or other media besides the Internet, then the problem may be due to a hardware failure or more likely the physical media being damaged. Try reading files from other parts of the media. If you are receiving read errors with other files on the disc, then the problem is likely due to damaged media. You will need to contact the source of the physical media for a replacement.


*-* Why do you get NSIS Error?

The NSIS error message box basically means that the setup executable (.exe) or installer user is trying to run is corrupted, or incomplete. However, often it’s not the actual cause.

One possible candidate is Windows Firewall which exists in Windows XP and later operating system such as Windows 2003, 2008 and Windows Vista. The solution is to disable the Windows Firewall and run the installer again.

Other reported problem maker that trigger NSIS Error include integrated nVidia NIC (network interface card) that includes a firewall. In this case, user have to change the network adapter to one without firewall or switch to wireless network temporarily to get the installer installed, as disabling the network card will still cause NSIS Error.