We need to interface with a legacy system that run MS DOS 6.22, with a TCP/IP stack and wg1049.exe to create a SMB server (more or less as described on this site).
Enabling SMB1.0 on our Windows system we could connect to this server swimmingly, but this stopped working with (I think) feature update 1809.
When comparing wireshark logs, I can see that after protocol negotiation (the server selects PC NETWORK PROGRAM 1.0
from the list) Windows just stops responding, instead of initiating a Tree Connect Request. SMB1.0 is still enabled.
What can I do to re-establish contact to the legacy hardware from a current Windows?
Note: We know that all this is quite horrible, but we need to support this for for some time longer. All systems are airgapped from the evil outside world.