https://bugs.winehq.org/show_bug.cgi?id=55522
--- Comment #5 from Bernhard Übelacker bernhardu@mailbox.org --- Thanks for the additional information. But I was looking specifically for the output when you start vpnsmgr from a terminal window.
I could now reproduce this crash inside a minimal Arch Linux VM, with the wine distribution package, and installed softethervpn-server-manager from AUR.
This uses this download: https://www.softether-download.com/files/softether/v4.38-9760-rtm-2021.08.17...
When running vpnsmgr from a terminal it shows these last lines: 0024:err:winediag:ntlm_check_version ntlm_auth was not found. Make sure that ntlm_auth >= 3.0.25 is in your path. Usually, you can find it in the winbind package of your distribution. 0024:err:ntlm:ntlm_LsaApInitializePackage no NTLM support, expect problems wine: Unhandled page fault on read access to 00000000...
After installing the distructions "samba" package the crash is no longer visible.
(Previous lines show "failed to load libgnutls", but are not related to the crash. But to avoid those one could install packages "gnutls lib32-gnutls" too.)