Hi, I'm Jon, an Independent Advisor and expert on Microsoft products.
I hope I can help you today.
I would always treat these type of emails with caution.
To check to see if there has been activity on your account do not click on any of the links in the email message but instead sign-in to the Security basics page for your Microsoft account here:
https://account.microsoft.com/security
Select Review activity and if there are any unusual sign-in attempts then you will be able to indicate that this wasn't you.
This page explains what Microsoft do if there's an unusual sign-in to your account:
https://support.microsoft.com/en-us/account-bil....
I hope this helps,
Please let me know if you have any other questions.
All the best,
Jon
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