That's what to do. XP EULA which they made you agree to:
"3. RESERVATION OF RIGHTS AND OWNERSHIP. Microsoft reserves all rights not expressly granted to you in this EULA. The Software is protected by copyright and other intellectual property laws and treaties. Microsoft or its suppliers own the title, copyright, and other intellectual property rights in the Software. The Software is licensed, not sold." So if you buy in, you have to do what they want you to, or risk losing your work all at once. I see you have a Faculty of Asian and Middle Eastern Studies, University of Oxford email address. They shouldn't be using that OS any more. Often, students and staff can buy MS licences for personal use through the institution. I can at Glasgow, but I gave up using MS when I was a postdoc last century, and spent most of my time trying to fix a bug in an adaptive optics platform I'd written which turned out to be in the MS C compiler. This is why open source happened. I've only used Linux since. I don't do games, so it's a no-brainer. If I did, there's the dual boot / virtual machine route. You may prefer to move to a newer Windows, if your machine is up to it. Either way, do it soon. XP is unsupported, which means you shouldn't really connect it to the big bad internet. There are nasty viruses out there, and XP won't be protected against new ones any more. On Friday, 14 October 2022 10:48:37 BST Dag Bergman wrote: > Thanks Werner for your comments, > > I will eventually test your suggestions, but the quickest way seems to do > Lilypond work on the Windows 10 machine, albeit inconvenient. > Best regards > Dag