Both messages are warnings – QEMU will work nevertheless. The first warning can be fixed as the message says (that needs an additional installation of Cygwin for gdk-pixbuf-query-loaders). It is also suppressed if there is an empty file loaders.cache. Newer installers (for example those from today) will create such an empty file automatically.
I don't get the second warning. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1766841 Title: QEMU 2.12 Running Problem in Windows 7 Installation Status in QEMU: Confirmed Bug description: QEMU Version: 2.12 (Binary installer qemu-w64-setup-20180424.exe from Stefan Weil's website so I am not sure I should report it to Weil by email or by this bug report system.) Host System: Windows 7 64bit Guest System: 9front 6350 (Codename“CONTENTS, MAINTAINED, STABLE”, Release 2018/02/02) QEMU Command: qemu-system-x86_64 -usb -device usb-mouse -hda plan9.qcow2.img -cdrom 9front-6350.iso -boot d QEMU warning: (qemu-system-x86_64.exe:8844): GdkPixbuf-WARNING **: Cannot open pixbuf loader module file 'D:\qemu\lib\gdk-pixbuf-2.0\2.10.0\loaders.cache': No such file or directory This likely means that your installation is broken. Try running the command gdk-pixbuf-query-loaders > D:\qemu\lib\gdk-pixbuf-2.0\2.10.0\loaders.cache to make things work again for the time being. (qemu-system-x86_64.exe:8844): Gtk-WARNING **: Could not find the icon 'window-minimize-symbolic-ltr'. The 'hicolor' theme was not found either, perhaps you need to install it. You can get a copy from: http://icon-theme.freedesktop.org/releases To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1766841/+subscriptions