Thank you Bob
Not sure what you mean by ‘Flash is updated via windows updater’
I update via the Adobe site. Sometimes Avast is slow at recognizing software has been updated. I only update from official sites - Avast provides a reminder.

As I said, I always watch for a few days to see how others fair with their updates - old habit I picked up many years ago with all Windows Updates sent out on Black Tuesdays.

Thanks for your reply