Moved into home. Seller left one thermostat locked and cannot access

[Sdalton]

Former owner sold house & kept account/locked nest thermostat with pin code- can not add to my newly established account without pin code.  Can not even add new nest thermostat because no internet yet.  House Temps are crazy.  Can not reset.

[David_K · Accepted solution]

You'll need to reset it using a computer.

1. Connect the Nest Thermostat display via USB to a computer.
   
   
2. Verify that the Nest Thermostat mounts (appears as an attached drive icon).

• If the Nest drive will not mount: Restart the thermostat and the computer.
• If the Nest drive still won't mount: Connect another device to the cable to see if it appears as an installed device.
• If it doesn't appear, use a different cable/port/computer.

If the Nest drive is successfully showing up on your computer, can you see a technicalinfo.PLIST file? If you get this far let me know and I'll ask a community specialist to assist with next steps, as these can't be shared publicly in the community.