With searching in Google and trying to run several official unmodified verions of Notepad++ in virtual machines. Notepad++ come with several plugins enabled, which may stop working before Notepad++ version. Please attention that, the installed version of Internet Explorer may affect other software, which I did not test. The following is what I get.
For Windows 95, refer to these links:
http://www.win3x.org/win3board/viewtopic.php?t=17221https://notepad-plus-plus.narkive.com/6lktixGR/notepad-plus-help-notepad-v4-0-does-not-work-on-win95
I've confirmed that Notepad++ 3.9 runs on Windows 95 RTM/OSR 2.5, and Notepad++ 4.0.1 doesn't (4.0 not found, but I think there's only minor changes). So Notepad++ 3.9 is the latest version for Windows 95.
For Windows NT 4.0, nothing found when searching.
I've confirmed that Notepad++ 4.6 runs on Windows NT 4.0 SP6, and Notepad++ 4.7.1/4.7.2/4.7.3 runs with error of plugin, and Notepad++ 4.7.5 doesn't work. So Notpad++ 4.7.3 is the latest for Windows NT 4 with plugins disabled.
For Windows 98/ME, refer to these links:
http://web.archive.org/web/20110709191226/http://notepad-plus-plus.org/news/notepad-5.9.1-release-is-available.htmlhttps://msfn.org/board/topic/105936-last-versions-of-software-for-windows-98se/page/68/#comment-1176861
I've confirmed that Notepad++ 5.9.6.2 (ANSI) runs Windows 98 SE/ME, and Notepad++ 5.9.8/6.0 (ANSI) runs with error of plugin, and Notepad++ 6.1 doesn't work because no ANSI version available. So Notepad++ 6.0 (ANSI) is the latest for Windows 98/ME with plugins disabled.
For Windows 2000, I've confirmed that Notepad++ 6.5 runs on Windows 2000 SP4, and Notepad++ 6.6 with default plugins runs with error, and Notepad++ 6.7 doesn't work. So Notepad++ 6.6.9 is the latest for Windows 2000 with plugins disabled.
Close#13725
Notepad++ is a free (free as in both "free speech" and "free beer") source code
editor and Notepad replacement that supports several programming languages and
natural languages. Running in the MS Windows environment, its use is governed by
GPL License.
All the Windows systems still supported by Microsoft are supported by Notepad++. However, not all Notepad++ users can or want to use the newest system. Here is the Supported systems information you may need in case you are one of them.
Build Notepad++
Please follow build guide to build Notepad++ from source.
Contribution
Contributions are welcome. Be mindful of our Contribution Rules to increase the likelihood of your contribution getting accepted.