Type edit group policy in Start menu or taskbar search box and then press Enter key to open Local Group Policy Editor. Way 1: Block Microsoft account by editing Group Policy Way 2: Block Microsoft account through Registry Editor.Way 1: Block Microsoft account by editing Group Policy.Now please follow 2 ways below to block or disable Microsoft account in Windows 10 if you need to make users unable to add or login Windows 10/8 with Microsoft account. So that you will not be able to login Windows with Microsoft account, cannot add a Microsoft account, or switch a local account to a Microsoft account, or connect a domain account to a Microsoft account.
If you want to limit the use of Microsoft account in your computer, such as disabling Microsoft logon option, you would have to block or disable Microsoft accountmanually. Microsoft account is allowed to add or create in Windows 10/8 by default. How to Disable or Block Microsoft Account in Windows 10/8