When did Lincoln set the slaves free?

The final executive order of the Emancipation Proclamation, only freed slaves in the areas of the Confederacy that had not already returned to Union/federal control by January 1863.

The thirteenth Amendment. abolished and outlawed slavery, throughout the US. It was ratified by 3/4 of the states in December of 1865, though it had passed both Houses, and was signed by President Lincoln, on February 1, 1865.