Thank you for submitting a question to Manage My Life.
The model number you gave me does not come up in our system. I will assume you have a 417.44152400. The door lock for this model is part number 131763202.
To purchase a door lock assembly for a Kenmore model number 417.44152400 front load washer please click
Here is a video that demonstrates replacing the door lock assembly on a washer like yours;
Always unplug or de-energize electrical equipment before removing covers or attempting service. Be careful and wear appropriate hand protection when working around sharp metal parts.
The washer in this video may not look exactly like yours, but it is similar and the procedure should be the same.
If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website;
Sears Home Services
I hope this is helpful, and if I may be of further assistance please include more details in a reply to this post.