On Windows Server 2016, opening a call to the ShellExecute function in a sandbox will fail to open a website address

[pangshangji]

Describe what you noticed and did

1. Running cmd in sandbox
2. cmd.exe /c start “” “https://www.google.com” or cmd.exe /c start “” “https://www.baidu.com” Unable to call default browser to open webpage

How often did you encounter it so far?

100% probability of occurrence

Affected program

Not relevant

Download link

Not relevant

Where is the program located?

Not relevant to my request.

Expected behavior

on windows server 2016, Use the following command to open the default browser
cmd.exe /c start “” “https://www.google.com”

What is your Windows edition and version?

Windows Server 2016 1607 64-bit

In which Windows account you have this problem?

A local account (Administrator).

Please mention any installed security software

Microsoft Defender Antivirus

What version of Sandboxie are you running?

Sandboxie Plus 1.12.6 64-bit

Is it a new installation of Sandboxie?

I recently did a new clean installation.

Is it a regression?

No response

In which sandbox type you have this problem?

In a standard isolation sandbox (yellow sandbox icon).

Can you reproduce this problem on a new empty sandbox?

I can confirm it also on a new empty sandbox.

Did you previously enable some security policy settings outside Sandboxie?

No response

Crash dump

No response

Trace log

No response

Sandboxie.ini configuration

No response

[DavidXanatos]

For me this works fine and opens firefox,
I think your issue is that server 2016 is windows 8 based which came with an Modern App version of MS Edge which is not supported by sandboxie hence your issue.
This will not be fixed anytime soon, see the various UWP incompatibilities already tracked: https://github.com/sandboxie-plus/Sandboxie/labels/uwp
especially #19 hence I'll close this issue.
The simplest fix for you will be to install some 3rd parts non UWP browser.