Youhave to do it in the guest ist selves. Just check that virtualbox has the version you like to have.
The iso should be updated automatically.
You just have to use the " Insert Guest Additions CD image option":
Almost not used windows since I said goodbye to it. I would like to have a minimal image were i could use some software, but without all the crap who comes with it. Unfortunately I always removed it again because of the size of it.
I have noticed a recommendation to change CPU topology from default to 1 socket 2-3 cpus 2 threads in Chris Titus videos, and VMs indeed seem to run better.
Give KVM a try! Virtualbox is type 2 hypervisor and will run much slower.
Just sudo dnf install @virtualization (if you are not on Silverblue).
Just a quick update: I created a VM for Win10 using virt-manager, and thanks to the valuable resources posted here (and some others), installation and configuration were a breeze. Everything is working just fine, and I will be able to drop VirtualBox entirely. So, big thanks to everyone that replied here, especially @caesar and @andym , for opening my eyes
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