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You may also be looking to turn off plugin update checking, in which case go to:

Plugins -> Plugin Manager -> Show Plugin Manager -> Settings (bottom left), and deselect "Notify of plugin updates at startup".

In newer versions of Notepad++ the option to disable automatic updating no longer appears in the Options dialog.

You can simply rename the C:Program FilesNotepad++updater directory to stop this feature. (e.g. rename it to updater_disabled)

Credit to http://wpkg.org/Notepad_plus_plus for suggesting the solution.

Find and edit this file

C:Users\...User...AppDataRoamingNotepad++config.xml

where ...User... is your username.

Find the line that reads something like this:

<GUIConfig name="noUpdate" intervalDays="15" nextUpdateDate="20141114">no</GUIConfig>

and change the 'no' to a 'yes'.
In effect, you're telling Notepad++ that 'yes, you want no updates'.

Another line I've changed is this one:

<GUIConfig name="RememberLastSession">no</GUIConfig>

where I've changed the default 'yes' to a 'no'.

It infuriated me that Notepad++ opened pretty much evey file I'd ever opened, every time I started it, long after I'd lost any interest in any of those files.

I don't know why Notepad++ shows options in its preferences dialog when clearly it just ignores them.

You might also have a look at EditPadLite (free) and/or EditPadPro (not free, but not too expensive).
Certainly better looking, better documented, and the 'lite' version has all I need.

While installing the application,

Notepad++ Setup - Choose components Dialog- Select the type of Install - Deselect the Auto-Updater check box.

Expanding on existing answers, here's my method for programmatically updating this:

# Note:

# - Notepad++ must be closed when you run this because when Notepad++ does its closing process, it re-writes the config.xml file with the config from memory

# - This script only updates one user profile, the current user's



$Path = "C:Users$($env:username)AppDataRoamingNotepad++config.xml"



# Disable auto-checking for updates

(Get-Content $Path | Out-String) -Replace '(.*noUpdate.*)no</GUIConfig>', '$1yes</GUIConfig>' | Out-File $Path



# To re-enable auto-checking for updates

(Get-Content $Path | Out-String) -Replace '(.*noUpdate.*)yes</GUIConfig>', '$1no</GUIConfig>' | Out-File $Path

If you have updates pending (you can start an update without admin), but are unable to complete them (because you don't have admin), you will get an annoying message each time you open it, asking you to complete the update.

You can make this go away by deleting %appdata%Notepad++pluginsConfigPluginManagerGpUp.xml. This will also delete the plugin_install_temp folder which contains the updates, when you next run it.

Regarding the renaming of the directory C:Program FilesNotepad++updater to something else (updater_disabled), I can confirm that for the latest Notepad++ Version 7.6.2 (Yellow Vests edition), this would disable also the tab Plugins admin. Anyway users need admin rights to install plugins, but it is a new functionality that gets knocked-out.

I just created a simple Preferences>Windows Settings>Files that deletes the files in the updater folder.