Elysse Bell is a finance and business writer for Investopedia. She writes about small business, personal finance, technology, and more. Samantha (Sam) Silberstein, CFP®, CSLP®, EA, is an experienced ...

A Microsoft account allows you to sign in to a wide range of Microsoft 365 apps and services using a single email and password. However, at times, you may encounter issues signing in to these apps.