If your device is missing, and you've signed in to it with your Microsoft account, you might be able to find it.
To find or fix your device:
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Sign in to account.microsoft.com/devices.
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Find the device you want to find, then select Show details.
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Either select Find my device.
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To check for any security issues, go to Windows Defender settings, select Show details, and check your security status.
For more info on finding a device, go to Find and lock a lost Windows device.