Microsoft account issue

The account and picture appear on the friend’s PC because a Microsoft account was added and used to sign in on that device. Signing out “of all devices” online does not remove an account profile from a specific Windows PC; it only invalidates sessions. The profile and picture remain on the device until the account is removed or switched back to a local account.

To fix this on the friend’s computer, do the following on that PC while signed in with the correct owner/admin account (your friend):

1. Remove the Microsoft account from Windows sign-in
   • Open Settings.
   • Go to Accounts.
   • Under Your info, make sure your friend is using their own account (local or Microsoft) as the main sign-in.
   • If your Microsoft account is listed as a separate user on the PC, remove it via Manage accounts on your PC: see Manage user accounts in Windows from the Help for accounts in Windows page.
2. Switch your profile on that PC to a local account (if still showing as Microsoft)
   • On that PC, sign in to the profile that shows your Microsoft account.
   • Open Settings > Accounts > Your info.
   • If available, select Sign in with a local account instead and follow the prompts to create a local account for that profile. This breaks the link to your Microsoft account on that device.
   • This is the same path referenced in the Q&A solution: Settings → Accounts → Your info → Sign in with a local user instead?
3. Remove your account from “Access work or school” / “Email & accounts” (if present)
   • Open Settings > Accounts.
   • Check Email & accounts and Access work or school.
   • If your Microsoft account appears there, select it and choose Remove.
4. (Optional) Remove saved credentials
   • Open Control Panel → Credential Manager.
   • Under Windows Credentials, remove any entries that reference your Microsoft account, similar to the steps used when removing cached Office credentials.

Why it “picked” your account

• When a Microsoft account is used to sign in on a Windows device, Windows may convert that profile to a Microsoft account profile and sync settings (including picture) to that device.
• Because that Microsoft account was used interactively on the PC, Windows treated it as a primary sign-in for that profile, so your picture and account name now appear at the sign-in screen.

After these steps, your friend should sign in only with their own account. Your Microsoft account will no longer appear as a sign-in option or show your picture on that PC.

References:

• Help for accounts in Windows
• Manage user accounts in Windows App
• Get help with your Microsoft account
• Troubleshoot Problems Signing In to Windows
• I accidentally signed into Microsoft Account one for all, instead of reverting back to Local account. - Microsoft Q&A
• How to change your user account name
• Change your Microsoft account picture