From 3804a4c22c97ff133d548b2dcc084ce7b510f729 Mon Sep 17 00:00:00 2001
From: goodusername123 <61405538+goodusername123@users.noreply.github.com>
Date: Sat, 24 Jan 2026 11:21:50 -0600
Subject: [PATCH] enable Printer Driver Isolation

Makes it so communication/interactions with printer drivers happens in a separate dedicated process so that they can't corrupt or crash the main process.
https://learn.microsoft.com/en-us/windows/win32/sbscs/application-manifests#printerdriverisolation
https://peteronprogramming.wordpress.com/2018/01/22/application-level-printer-driver-isolation/
---
 res/Notepad3.exe.manifest | 1 +
 1 file changed, 1 insertion(+)

diff --git a/res/Notepad3.exe.manifest b/res/Notepad3.exe.manifest
index a8f3d4ede..bb41ef74f 100644
--- a/res/Notepad3.exe.manifest
+++ b/res/Notepad3.exe.manifest
@@ -15,6 +15,7 @@
     <!-- <msix xmlns="urn:schemas-microsoft-com:msix.v1" publisher="CN=Rizonesoft" packageName="RizonesoftNotepad3" applicationId="RizonesoftNotepad3"/> (issue #4949) -->
 	<asmv3:application xmlns:asmv3="urn:schemas-microsoft-com:asm.v3" xmlns="urn:schemas-microsoft-com:asm.v3">
 		<asmv3:windowsSettings>
+			<printerDriverIsolation xmlns="http://schemas.microsoft.com/SMI/2011/WindowsSettings">true</printerDriverIsolation>
 			<dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">true/PM</dpiAware>
 			<dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2,PerMonitor</dpiAwareness>
 			<ws2:longPathAware xmlns:ws2="http://schemas.microsoft.com/SMI/2016/WindowsSettings">true</ws2:longPathAware>