Hi there and welcome
This is 100% a scam. This email is a fake and Microsoft would never email you like this.
This is what is known as "email phishing" it is can be a very serious problem if you do let them access your account by doing the instructions they ask you to do.
Basically what they will do is email a lot of people and say that you have problems. Any actual problems you have will be entirely coincidental. They will then get you to click something, and enter in your details. When you do this, then they gain access to your account and it is effectively hacked. It can be very hard to get access back again after doing this.
You are best to delete these emails when you receive them, and NEVER do any of the instructions they ask. Even though the emails look like they are from Microsoft, it is all a fake
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