Hi charlotteleanne. Thank you for reaching out. My name is Jayson, an Independent Advisor for Microsoft and a user just like you. I'll be glad to assist you.
Please go to the link below and follow the instruction by Mr. Greg on how to solve this issue.
https://answers.microsoft.com/en-us/windows/for...
There are a couple of steps to do but he explained it very well so you won't get confused.
Hope this helps. Let me know if you need more assistance.