Lock a lost phone: manage devices in the Security Center

What it is and what it is for

The Security Center shows the devices and sessions of your account. There you lock a lost or sold smartphone right away. The lock for all accounts exists only for smartphones and tablets. Only the account that owns the device can trigger it.

How it works

1. In the right sidebar, open Team & Security → Security Center.
2. Find the device under Registered Devices. The Smartphones filter helps.
3. Open the three-dot menu of the device.
4. Choose Lock device for all accounts and confirm. All sessions on the device end.

Good to know

• Invalidate only disconnects the device from your account. It must be paired again afterwards.
• Remove deletes the device record permanently.
• You pair a locked device again only with Add mobile device, not with “Reconnect mobile device”.
• The root account sees the devices of all users.
• When you sign in, PaperOffice can ask for a confirmation code, for example on a new device or from an unusual network. The code is sent by email or, if a phone number for two-factor sign-in is set up for the user, by SMS. You switch on two-factor sign-in per user in Users Management; this requires active auto-refill, because sending codes is paid. An authenticator app is not available yet.
• An IP whitelist exists for API keys. An IP restriction for users or groups currently has no effect.
• You set up a Windows Hello passkey on the same page.