Hello, Peter Benson.
I would like to point out right away that Gmail is a third-party service (Google), not Microsoft. Take a look at this help from Google*****: https://support.google.com/accounts/answer/7682439?hl=en&sjid=4479785063705378602-EU
It is possible that the information will be useful and will help solve the problem.
*****Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.