Hi Landyce,
Thank you for posting your question here!
This usually happens when Windows accessibility keys turn on by accident. To fix it, try to follow the steps that is provided above. Kindly open Settings go to Accessibility then Keyboard and turn off Sticky Keys Filter Keys and Toggle Keys then open each of those options and make sure the shortcut to turn them on is disabled so this does not happen again. After that sign out and sign back in. If you are still seeing double strokes after that, it could be keyboard repeat delay. Go to Settings again, then Accessibility then Keyboard after that adjust Key repeat delay to Long and repeat rate to Slow.
Let me know if you need further assistance, feel free to rate the thread. Thank you and I appreciate your effort.
Best Regards,
Angelique P.