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Hi Xiao Wen,
I can understand how frustrating when being locked out of your Surface is stressful, especially when you are also concerned that someone may have accessed your account.
To help narrow this down, could you please confirm:
- Does the sign-in screen show Sign-in options and is there an option to enter your Microsoft account password instead of using Face recognition or the PIN?
- Is the Surface connected to Wi-Fi from the lock screen?
- Can you still sign in to your Microsoft account successfully from another device or browser?
- What exact message appears on the Surface when the PIN is rejected?
In the meantime, please try the following:
- Connect the Surface to the Internet from the network icon on the sign-in screen.
- Select Sign-in options and check whether you can sign in using your Microsoft account password. If I forgot my PIN is unavailable, Microsoft recommends signing in with the password first and then resetting the PIN under Settings > Accounts > Sign-in options > PIN (Windows Hello). You can find the official instructions here: Change or reset your PIN in Windows.
- From another trusted device, review the recent sign-in activity for your Microsoft account. If you see activity you do not recognize, secure the account by changing the password and reviewing the security information.
- For the error under More actions, try opening the Microsoft account device page in an InPrivate or Incognito window or use another browser. If the same error continues, keep the Trace ID available for Microsoft Support, but please do not post the full Trace ID or other account details publicly.
Please note that this is a user-to-user support forum. Forum members and moderators cannot access your account, investigate the Trace ID or unlock the device from the back end. If the Surface remains locked after trying the password sign-in option, please contact Microsoft Support so the appropriate team can review the service error securely. Thank you so much for your understanding.
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