If you can't change Windows 11 resolution in a VirtualBox VM, ensure you have Guest Addition installed, and other settings ...

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Does anyone know offhand how to remove the guest additions for VirtualBox 3.1 in Ubuntu 9.10? These are the additions that provide mouse integration and X drivers for automatic window resizing.

There's no need for Guest Additions to copy text between host and guest machines in VirtualBox. To enable copying and pasting ...