[Solved] VirtualBox Graphics Adapter compatible with Windows 10?

[nonagon]

Hi,

I'm running VirtualBox 5.0.20 with host OS X 10.11.5 and guest Windows 10.0.10586. When I install the guest additions I get an error under VirtualBox Graphics Adapter in the Device Manager:

Windows cannot initialize the device driver for this hardware. (Code 37)

{Operation Failed}
The requested operation was unsuccessful.

I've seen quite a few similar posts here and elsewhere on the web, and I tried as many of the suggestions as I could. Most of them relate to running the guest addition installer in Windows 7 or 8 compatibility mode, removing an old version of the driver from C:\Windows\System32\DriverStore\FileRepository and reinstalling, and installing a clean version of Windows 10. They all yield the same result for me (an error initializing the VirtualBox Graphics Adapter).

Is there a log file I can view to learn more details about what went wrong? Is there a definitive place to look for instructions on how to get the VirtualBox Graphics Adapter working in Windows 10 running under an OS X host?

Regards,
Jeremy

[mpack]

Do the graphics actually work? AIUI the GAs implement a graphics API, it isn't a simulated graphics card. This is assuming that you're talking about the GAs. Otherwise the graphics simulation is of a legacy VESA SVGA card.

[nonagon]

The graphics do indeed work for me. I'm not doing anything graphically intense so I'm not sure if any acceleration is working. The problem is just that the full-screen mode and "Auto-resize guest display" aren't working. I just have access to the standard resolutions (1024x768, 1280x1024, etc), not the native resolution of my laptop (1280x800).

Jeremy

[mpack]

The latter is a common enough problem. Usually the display size you're stuck in is the highest possible 4:3 ratio, because VirtualBox and the Window guest have gotten tied into a knot telling/asking each other only about 4:3 ratio options, because that's the size of your default virtual monitor (your actual monitor of course isn't relevant to the VM). If you shut down all VMs, then in the UI go to File|Preferences|Display and set MaxGuestDisplaySize to "None" then you should be able to select any display size you like in any VM.

[nonagon]

Works great, thank you!
Jeremy

[mpack]

Thanks for reporting back.