Why is Microsoft texting me?

Not sure what to do if you get a text message from Microsoft? Here's some info that might be helpful.  

Why did I get a text message?
What are the different kinds of text messages I could receive?
Do I need to do anything with these text messages?
What if I didn't get a text message?
How can I stop receiving text messages?


Article ID: 10632 - Last Review: 17 May 2016 - Revision: 19