Initial monitor does not output anything on Windows (MSYS2 binary) When running on Windows error messages before the UI is started are not showing up. For example when I run: qemu-system-i386.exe -L /mingw32/etc/qemu/ -m 20G It should display "ram size too large", according to gdb: Breakpoint 1, error_report (fmt=fmt@entry=0x71bdf6 "ram size too large") at C:/build/mingw/mingw-w64-qemu/src/qemu-2.4.0/util/qemu-error.c:233 However the console does never receive that. As far as I could find out vfprintf is called, but it doesn't output anything. This affects both binary editions (for instance "qemu-system-i386.exe" AND "qemu-system-i386w.exe") dumpbin /all "C:\Program Files\qemu\qemu-system-i386.exe"|more Dump of file C:\Program Files\qemu\qemu-system-i386.exe PE signature found File Type: EXECUTABLE IMAGE FILE HEADER VALUES 8664 machine (x64) This affects both binary editions (for instance "qemu-system-i386.exe" AND "qemu-system-i386w.exe") dumpbin /all "C:\Program Files\qemu\qemu-system-i386.exe"|more Dump of file C:\Program Files\qemu\qemu-system-i386.exe PE signature found File Type: EXECUTABLE IMAGE 4.00 operating system version 5.02 subsystem version: Win32 Looking through old bug tickets... can you still reproduce this issue with the latest version of QEMU? Or could we close this ticket nowadays? I just retested, it is fixed in the latest version on MSYS2.