[Problem/Bug]: Window.print doesn't work on fixed runtime unless ALL APPLICATION PACKAGES permissions set

[edahlberg]

What happened?

The documentation for Webview2 says the following:

https://learn.microsoft.com/en-us/microsoft-edge/webview2/concepts/distribution?tabs=dotnetcsharp#details-about-the-fixed-version-runtime-distribution-mode

On Windows 10 devices, starting with Fixed Version 120, developers of unpackaged Win32 applications using Fixed Version are required to run the following commands, for Fixed Version to continue to work. This is due to a security improvement in v120 to run the Renderer process inside the App Container. This change doesn't affect Windows 11 devices, the older runtime, or packaged apps.

However, window.print shows up empty on Windows 11 if these permissions are not set.

Importance

Low. My app is not very affected, or this only affects development.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

128.0.2739.63

SDK Version

1.0.2739.15

Framework

WPF

Operating System

Windows 11

OS Version

22631.4037

Repro steps

1. Add a fixed webview to WPF application on windows 11 without setting the permissions

2. try to print any page

3. print preview does not load and the print doesn't work if fixed runtime is used

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

Regression in newer Runtime

Last working version (if regression)

123.x.x.x