Run Windows 11 alongside Kubuntu using VirtualBox.

Step 1: Click 'New' to create a new VM.

Step 2: Set VM name, select the Windows 11 ISO, and skip unattended installation.

Step 3: Set 'Base Memory' to at least 8192 MB, set 'Processors' to at least 4, and check 'Enable EFI (special OSes only).

Step 4: Set 'Disk Size' to 80 GB or more.

Step 5: Review settings and click 'Finish' to create the VM.

Step 6: Click 'Start' to boot the VM and begin installation.

Step 1: Press any key when prompted to boot the Windows 11 ISO.

Step 2: Select language and keyboard preferences, then click 'Next'.

Step 3: Click 'Install now'.

Step 4: Click 'I don't have a product key.' You may activate your chosen edition of Windows later.

Step 5: Select an edition of Windows to install. Home and Pro are the two most common choices.

Step 6: Read and accept the Windows End User License Agreement.

Step 7: Click 'Custom: Install Windows only (advanced)'.

Step 8: Click 'Next' on the partitioning screen to accept the defaults.

Step 9: Wait until the VM automatically restarts.

Step 1: Upon reaching the 'Activate Windows' screen (step 4 of Install W11), press [SHIFT][F10] to open a terminal window, then run 'regedit'. You may need to press the 'Back' button to get here if you've already hit the hardware requirements error.

Step 2: Navigate to the HKEY_LOCAL_MACHINE\SYSTEM\Setup key.

Step 3: Right-click the 'Setup' key and click New > Key, then name the new key 'LabConfig'.

Step 4: Right-click the 'LabConfig' key you just made, then click New > DWORD (32-bit) Value. Name the new value 'BypassTPMCheck' and set its value to '1'.

Step 5: Create three more DWORD values, named 'BypassCPUCheck', 'BypassRAMCheck', and 'BypassSecureBootCheck'. Set each of these values to '1'.

Step 6: Close Registry Editor, then resume the Install W11 procedure starting from step 4. You should now be allowed to proceed with the installation.

Step 1: Press Shfit+F10 to open a terminal, and run 'OOBE\BYPASSNRO'. This will bypass needing a Microsoft account. The VM will reboot automatically.

Step 2: Select your country and click 'Yes'.

Step 3: Select your keyboard layout and click 'Yes'.

Step 4: Skip adding a second keyboard layout. You can enable additional layouts if needed.

Step 5: Wait for updates to be installed. The VM will automatically reboot.

Step 6: Choose a name for the VM and click 'Next'.

Step 7: Right-click the virtual network adapter and disconnect it. This is necessary to bypass needing a Microsoft account.

Step 8: Choose to set up the VM for personal use, then click 'Next'.

Step 9: Enter your desired username, and click 'Next'.

Step 10: Enter and confirm your password, clicking 'Next' when prompted.

Step 11: Choose three security questions and their answers. We recommend using your VM password as the answer to each question.

Step 12: Switch off all privacy-affecting features and click 'Accept'.

Step 13: Wait for Windows to finish setup.

Step 14: Verify that the Windows desktop appears as shown. Do not connect to the Internet yet.

Step 15: Click 'Devices > Insert Guest Additions CD image...'.

Step 16: Click 'File Manager > This PC', and double-click 'VirtualBox Guest Additions'.

Step 17: Double-click 'VBoxWindowsAdditions'.

Step 18: At the User Account Control prompt, click 'Yes'.

Step 19: In the installation wizard, click 'Next' until you are shown the 'Choose Components' screen.

Step 20: On the 'Choose Components' screen, click 'Install'.

Step 21: Let the installation finish. It is usually very fast.

Step 22: Once installation is finished, click 'I want to manually reboot later', then click 'Finish'.

Step 23: Click 'Start Menu > Power > Shut Down'.

Step 23: In the VirtualBox manager window, ensure the Windows 11 VM is selected, and click 'Settings'.

Step 25: Click 'Display', then check the 'Enable 3D Acceleration' box. Increase video memory to 256 MB, then click 'OK'.

Step 26: Click 'Start' to launch the VM again.

Step 27: Right-click the virtual network adapter and reconnect it.

Step 28: Install OS updates and reboot.

Step 29: In Settings, find the 'Activation' screen. Click 'Change product key', and enter your product key to activate Windows.