Previously, we installed its contents in a way that made `pacman` not aware of the files (using `VBoxManage extpack install ...` from an install script). To mitigate issues during upgrade, you can use one of the following methods: - Uninstall `virtualbox-ext-vnc` before upgrading the system, then installing it again. - Run `VBoxManage extpack uninstall 'VNC'` as root before upgrading the system. - Instruct `pacman` once to overwrite the existing files:
```bash pacman -Syu --overwrite '/usr/lib/virtualbox/ExtensionPacks/VNC/*' ``` URL: https://archlinux.org/news/virtualbox-ext-vnc-7212-2-requires-manual-intervention/
