This is a common issue on Windows and is normally caused by the colour profile (ICC profile) used by your display/device. Colour profiles are normally provided by the manufacturer of your display/device or a third party creator.  If your document is showing an off white canvas, it's possible to workaround this issue by changing your display's colour profile to sRGB IEC61966-2.1 but we would recommend that you contact the manufacturer of your display/device or the creator of your specific ICC pro