[Bug] simplewall.exe crashes with HEAP_CORRUPTION when popup decision should appear on Windows 11 24H2 / IoT Enterprise LTSC

[neuroben]

Checklist

• I have used the search function to see if someone else has already submitted the same bug report.
• I will describe the problem with as much detail as possible.

App version

3.8.7

Windows version

Windows 11 IoT Enterprise LTSC 24H2 | OS Build: 26100.7623

Steps to reproduce

• Install SimpleWall 3.8.7 on Windows 11 IoT Enterprise LTSC 24H2.
• Ensure SimpleWall is running.
• Reboot the system.
• Start SimpleWall.
• Launch any application that initiates a new outbound network connection (e.g. installer, updater, or any executable not yet covered by an allow rule).
• At the moment when SimpleWall should display the popup asking to allow or block the connection, the application crashes.

Expected behavior

When a new outbound connection is initiated, SimpleWall should display a popup dialog asking the user to allow or block the connection, without crashing.

Actual behavior

SimpleWall crashes immediately when the popup decision should appear.
No popup is shown.
The process terminates and leaves active WFP filters behind, causing outbound connections to remain blocked until reboot.

Windows Event Viewer consistently reports an application crash with heap corruption.

Logs

Faulting application name: simplewall.exe, version: 3.8.7.0, time stamp: 0xc60e06a5
Faulting module name: ntdll.dll, version: 10.0.26100.7623, time stamp: 0x5b6dddee
Exception code: 0xc0000374 (HEAP_CORRUPTION)
Fault offset: 0x00000000001176b5
Faulting process id: 0x446C
Faulting application start time: 0x1DC860326E699F0
Faulting application path: C:\Program Files\simplewall\simplewall.exe
Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll
Report Id: 9c2bcff8-2b2b-4b89-86e9-324f93be611e

[henrypp]

dump?

[neuroben]

Yes, sorry I missed it

simplewall.exe.11708.dmp

simplewall.exe.2580.dmp

[innocenat]

I have this problem too. I am on Win 11 Pro 24H2. My experience is that after reboot it's good for a while (popup works), but it eventually crashed on popup. Have not figured out what changed that cause the popup to crash. Actually I just identified the popup as the cause of crash today.