Should I delink my local user account from Microsoft services, now that I have a local user account also linked to that account?

Having both a local Windows account and a Microsoft account on the same device is supported and does not, by itself, cause technical problems. Windows is designed to let multiple user accounts exist on one PC, and more than one of those accounts can be linked to the same Microsoft account for apps and services.

Key points based on how Windows accounts work:

• A local account is specific to that device and does not require internet connectivity. Its settings and files stay on that PC only.
• A Microsoft account is cloud-connected and can sync settings and files across devices and give access to services like Outlook, OneDrive, Xbox, and the Microsoft Store.
• Windows allows switching a given sign-in from local to Microsoft and back using Settings → Accounts → Your info:
  • "Sign in with a Microsoft account instead" (when currently using a local account)
  • "Sign in with a local account instead" (when currently using a Microsoft account)

Because of this design, simply having:

• one local account that signs into Microsoft apps, and
• one Windows account that itself is a Microsoft account

will not inherently break anything. The main risks are confusion and management overhead, not corruption or account damage:

• It can be harder to keep track of which Windows profile is signed in to which Microsoft account in apps like Store, OneDrive, or Xbox.
• If the same Microsoft account is used in multiple Windows profiles, sign-in prompts or token refreshes can sometimes feel inconsistent, but this is a usability issue rather than a data-loss risk.

Whether to keep or remove the local account depends on how it is used:

• Keep the local account if:
  • It is still used as a separate profile (for testing, privacy, or a minimal environment).
  • It provides a fallback sign-in that is not tied to the cloud.
• Consider removing the local account if:
  • It is no longer used at all.
  • It only exists from earlier attempts to separate accounts and now causes confusion.
  • All needed data has been moved to the main Microsoft account profile.

If the goal is to simplify and avoid confusion:

1. Sign in to the account that is used day-to-day.
2. In Settings → Accounts → Your info, ensure it is set up the way that is preferred (either as a Microsoft account or as a local account linked to a Microsoft account for apps).
3. For the older local account:
   • Sign in once and verify that no important files or app data remain.
   • If not needed, sign out and remove that account from Settings → Accounts → Family & other users (or the equivalent section in Windows 11), understanding this will delete its local profile data.

If automatic sign-in of Microsoft apps from the local account is causing confusion but the account itself is still useful, it is also possible to:

• Sign out of Microsoft apps (Store, Office, OneDrive, etc.) within that local account and only keep them signed in under the main Microsoft user account.

There is no requirement to delete the local account for things to work correctly; it is mainly a question of simplifying the setup and avoiding account mix-ups.

References:

• Change From a Local Account to a Microsoft Account in Windows
• How to create a new Microsoft account
• How to remove Microsoft Sign In - Microsoft Q&A