As the Admin Portal and Customer Portal are being migrated to 3D Experience this guide is for users that are looking to administer the access to downloads and the SOLIDWORKS Knowledge Base. If your company did not have an Admin, CADimensions may need to help set up the account initially, but this is how you handle it from there.
Let's start with the solution. Before you install SOLIDWORKS 2024, Deactivate your SOLIDWORKS license, then Reactivate it after you have completed your installation. If you do not, you are liable to run into an Activation Count Exceeded error, and will be unable to open SOLIDWORKS.