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Available on winget

Install Nullsoft Install System

A professional open source system to create Windows installers

Install with winget
winget install --id NSIS.NSIS
Upgrade
winget upgrade --id NSIS.NSIS
Uninstall
winget uninstall --id NSIS.NSIS

About Nullsoft Install System

NSIS (Nullsoft Scriptable Install System) is a professional open source system to create Windows installers. It is designed to be as small and flexible as possible and is therefore very suitable for internet distribution. Being a user's first experience with your product, a stable and reliable installer is an important component of successful software. With NSIS you can create such installers that are capable of doing everything that is needed to setup your software. NSIS is script-based and allows you to create th...

What's new in 3.12

F.1.1 Changelog F.1.1.1 Security - Don't use the Low IL temp directory when elevated (thanks Richard Warren for responsibly disclosing, bug #1326) This stops a possible privilege escalation for installers running as SYSTEM. F.1.1.2 Minor Changes - Added StartsWith[S], EndsWith[S], Contains[S], IsLowerCase and IsUpperCase LogicLib operators. F.1.1.3 Build System - Support Python older than 3.6 again (bug #1325) - Preliminary ARM64 support in makensis.nsi (patch #318)

Read release notes

Version history

Version Updated Notes
3.12 Unknown F.1.1 Changelog F.1.1.1 Security - Don't use the Low IL temp directory when elevated (thanks Richard Warren for responsibly disclosing, bug #1326) This stops a possible privilege escalation for installers running as SYST...
3.11 Unknown F.1.1 Release Notes Your installer will still fit on a single floppy disk. Or even eight. F.1.2 Changelog F.1.2.1 Security - Retry creating restricted $PLUGINSDIR (thanks Sandro Poppi for responsibly disclosing, bug #131...
3.10 Unknown No notes
3.09 Unknown No notes
3.08 Unknown No notes
3.07 Unknown No notes
3.06.1 Unknown No notes