Using “Virtual Screen 1 -> Resize to: (some resolution)” would also work one-way only….

“Auto-resize guest display” would only work when lowering the resolution, and after doing that, it won’t go up, not even to 1024×768.Maximum guest os resolution was 1024×768 and Display Properties won’t give me options higher then this.The Standard Microsoft display driver in Windows was replaced by the Oracle VirtualBox Graphics Adapter.VirtualBox guest additions was installed.VirtualBox extension pack was installed.Now, the version of VirtualBox I currently have is 5.0.32 but this “remedy” would actually work with any version of this virtualization software. Turns out no matter what I did I couldn’t increase the guest resolution beyond 1024×768. The truth behind this saying was revealed to me this morning when I finally found out what I had to do to fix the problem I had with my Windows guest on VirtualBox. Here in Macedonia we have a saying (rough translation): The cure is cheap, but you have to know it.

Increase resolution ubuntu virtualbox