@Vivaldi if we're talking Windows then I suppose the first "uninstall" would be the hotmail account I used to activate it (after disabling OneDrive and creating normal non-connected admin accounts for the rest of the set-up process). Then (after installing Vivaldi) all the office crap. Then, using ShutUp10, all the hundreds of services phoning home to Microsoft - which (relevant to the thread here) includes everything related to CoPilot.