Microsoft store help

this is a Microsoft account hijacking / mislinked identity issue. Here’s a clear, step-by-step solution you (or the person asking) can follow to fix it:

You want to verify with an unknown email address (e.g., ******@163.com) when using Microsoft Store, even though that email is not linked to your Microsoft Account.
This typically happens when:

• A different Microsoft account (with a similar name) is cached in the Store app.
• The Store app or Windows sign-in is using a secondary or previous account.
• Or in rare cases, there’s been an account mix-up or credential hijack.

Step-by-Step Fix

1. Sign out of all accounts in Microsoft Store

1. Open Microsoft Store.
2. Click on your profile picture (top right corner) → choose Sign out for every account shown.
3. Then close the Store completely (Alt + F4 or via Task Manager).

2. Clear Microsoft Store cache

1. Press Windows + R.
2. Type:wsreset.exe
3. Press Enter — a blank window opens for a few seconds, then the Store restarts.

3. Re-sign in with the correct account

1. Reopen Microsoft Store.
2. Click the profile icon → Sign in.
3. Choose your correct Microsoft account (the one you own).
4. If you don’t see it, click “Use a different account” and enter your full email and password.

4. Check your device’s “Email & accounts” settings

1. Open Settings → Accounts → Email & accounts.
2. Under Accounts used by other apps, remove any unknown or 163.com addresses.
3. Make sure only your Microsoft account is listed.

5. Check for Windows sign-in mix-ups

Sometimes Windows itself is logged in under another Microsoft account.

• Go to Settings → Accounts → Your info
  → Check if your account email matches the one you actually use.
• If not, switch to a local account, then sign in again with your real Microsoft account.

6. (Optional but important) Check account security online

1. Go to: https://account.microsoft.com/security
2. Log in with your correct account.
3. Under Security info, ensure there are no unknown recovery emails or phone numbers.
4. Remove anything you don’t recognize.
5. Change your password and enable 2-step verification.

7. Test the Store again

Now open Microsoft Store → try downloading an app.
It should prompt you for your Microsoft account only — not the unknown one.