Error while setting up environment for the application

[peter8777555]

OS : Windows 11 (10.0.22631.2715 23H2)

OK:
C:\Windows\system32\cmd.exe and run any DOS programs

NG:
C:\Windows\SysWOW64\cmd.exe and run any DOS programs

---

16 bit MS-DOS Subsystem

Administrator: C:\Windows\SysWOW64\cmd.exe - pc
Error while setting up environment for the application. Choose 'Close' to terminate the application.

Close(C) Ignore(I)

LOG.zip

[peter8777555]

OS : Windows 11 (10.0.22631.2715 23H2)

OK:
C:\Windows\system32\cmd.exe and run any DOS programs

NG:
Explorer.exe double click run any DOS programs.

16 bit MS-DOS Subsystem

G:\PC.EXE
NTVDM has encountered a System Error
Access denied。
Choose 'Close' to terminate the application.

Close(C) Ingore(I)

I use Administrator account.

By the way,
Windows 7 X64 has no any problems.

Log.zip

[pcmicro]

Could this be caused because Microsoft removed the "Legacy console" feature in December 2023?

[leecher1337]

So RegisterConsoleVDM call failed. Could be due to Legacy Console removal, as pcmicro said.
You can try to reset symbols first with Release\reg\reloadsym.reg just to be sure that it is not related to some bad sybols which often causes weird problems.
Otherwise a debugger would be needed to step into mentioned function and also on attached conhost process to check where it fails in particular.

I cannot reproduce the problem, tried on Windows 11 23H2 Build 22631 without any issues (but conhost V1 also still works for me on this release).