Organizing and accessing contact information in Outlook.com
tengo el mismo problema, el ultimo correo que recibí es del 28 de abril y luego nada.
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If you are a Microsoft personal account user and have either Teams and Outlook apps installed (and Contact sync enabled in both) or the Phone Link installed, you might observe duplicate contacts in Outlook due to a recent issue with contact synchronization. You can use the below workaround to remove the device synced contacts and all the duplicates created by this issue.
How to Delete Device Contacts Sub-Folder1. Go to Teams App on your mobile device (iOS or Android).1. Click on your Profile Icon Home and navigate to Settings and People. 
Good day - I have a similar problem with my Hotmail e-mail. Similar in that I cannot send or receive e-mail using my Hotmail account on my mobile device (Apple iPhone 14). However, I am not 100% disabled by this problem.
I can indeed send and receive Hotmail on my desktop computer (Mac). Please provide any guidance you can to help me resume Hotmail e-mail communications via my mobile device. I do not have the Teams app installed on any device.
Thank you. rb
I don't have Teams on my mobile device, so this doesn't help at all.