reinstallation

Dear Forum, Running Parallels 18 on Macbook Air M2. Everything was working perfect until I accidentally deleted the iso file for the Windows. I ran a Win11 Pro instance. I contacted parallels support through FB and they suggested reinstalling Parallels and the VM. I did so, but my Windows key...

I'm using Parallels Desktop 15 for Mac, and running WinXP in the VM. Recently WinXP wouldn't boot. I took it to a shop which created a new VM, reinstalled WinXP, and brought the files over into the new VM. The problem is, I don't know how to reinstall the software that was brought over; also...