How to deal with the occupants when buying an auction property?

[Chrystian Tapia]

I just purchased my first investment property at the county auction and the property is occupied. Do i wait to receive the deed which can take about a month or should i knock on the door now and begin the dialogue with the current occupants? I have only seen the exterior of the property and I would really like to see the condition of the interior so I can start planning the renovation. I'm in cook county which is in Illinois, any advice would be greatly appreciated. Thanks