Is it OK to have 2 Microsoft accounts?
Yes, it is possible to run two Microsoft accounts on the same PC. In fact, Windows 10 allows users to switch between multiple accounts on the same device.
Can you have 2 Microsoft accounts with the same phone number?
Each Microsoft 365 account requires a unique phone number for security and verification purposes. If you try to use the same phone number on multiple accounts, you may encounter issues with verification and account access.
How do I create a second Microsoft account?
Add multiple users in the Microsoft 365 admin center
Sign in to Microsoft 365 with your work or school account. In the admin center, choose Users > Active users. Select Add multiple users. On the Import multiple users panel, you can optionally download a sample CSV file with or without sample data filled in.