Step 1:

Start DraftSight and click on Down Arrow beside Help? at the top right of your DraftSight screen.

Step 2:

Click on Activate DraftSight and take note of your DraftSight Serial Number.  You will need this. Just click on cancel once you’ve got the details.

Step 3:

Next, select Deactivate DraftSight from the Help Menu. The following screen will appear. 

Click on Next and follow the onscreen instructions.  When complete, you will see the following screen:

Step 3:

Download DraftSight from this link: 

https://www.3ds.com/products-services/draftsight-cad-software/download-draftsight/?wockw=Draftsight

When the download completes, double click on the file and follow the on screen instructions to enter your serial number and complete the installation.