How does that work if your VPN exit point changes? I switch fairly regularly depending on what I'm trying to access, and wouldn't know the IP address in advance.
This works if you signed in with your Microsoft account, are scrapping the old PC (or at least not using the copy of Windows), and are installing the same version of Windows on the new hardware.
During installation select the option for I have no activation key. Once Windows is installed, open settings and select the activate Windows option. Go through the activation troubleshooter and there's an option to transfer the key from an old installation. Select the correct one based on whatever you called the old installation, and you should be set.
There's lots of good advice in this thread, but there's no point in pirating a copy of Windows when you already own one.
The PortableApps version is a separate installation of the program, so Firefox in this case, that's self contained so that it can be used on multiple computers from a removable device. The default profile should be completely unrelated to the fully installed Firefox's profile.
I've tried it on Linux too with an AppImage, but get the same result.
Another reason on top of what's been mentioned already (although probably minor), is that out of the box, Firefox doesn't let you run multiple instances.
I've been learning to write a web app and updating websites, so have been using PortableApps to launch a second instance of Chrome to double check how everything looks when I'm not logged in. I tried switching to Firefox, but it wouldn't let me open the second instance, meaning that every time I wanted to check the site, I'd have to log out. I check them in Chrome, Firefox, and Opera.
I might be a niche case, but I'm already finding it really annoying. I can't imagine how much more frustrating it would be to try to write a browser that can't run at the same time as your preferred browser.
Off topic, but I read a book or short story once that was similar to your edit.
It followed a character who lived on a planet with a toxic atmosphere. At the end of every day, everyone would get into a personal chamber that took a complete copy of them, destroyed their body, then rebuilt it and added the memories back the next morning.
I can't remember if it was specified or implied, but the gist of it was that the machine ripped the body apart to the molecular level while the person was conscious, but the snapshot was taken before that, so no one remembered the pain.
This is why I'll never use Windows, it's just too complicated for the average person. Imagine having to enter commands into the command line just to upgrade your computer, that's way beyond most people.
I'd rather just stick with Mint with its GUI and automatic updates π
It's an awful UI. Last time I tried to use it, it took a while to find where the layers menu was. I don't think I found how to make a brightness / contrast layer before I gave up and booted back to Windows and Photoshop.
Sorry if I'm being oblivious, but what's BTN?