Windows feature edition 21H1 for Windows 10 is going to have its last security patch on June 13th, 2023. At this point, all Windows 10 users should switch to Windows 10 22H2 (2022 second half), or move to Windows 11. Need help? I’ve placed instructions in the May 2023 PC Updater News, available free for download or delivery at https://startupware.com/newsletter.