I run mirc from c:\mirc\ folder
at some point an update installed a new folder with only shortcuts for mirc/help/etc in .. program files (x86)\ which only effect was to make the desktop and start icons a default piece of paper. used copilot ai to troubleshoot and found the errant folder. the folder files were dated 12/1 (shortcuts to wrong file location). deleted them and recreated start menu shortcuts and put them in proper windows directory and on the desktop and that restored mirc icon since mIRC.exe was in the proper shortcut location. just information in case others report same issue.