If you already have a license, you should activate it through official channels rather than searching for public codes: How to Purchase and Activate Multisim Student Edition - NI 5 Dec 2024 —
Always ensure that any software you use complies with your organization's policies and licensing agreements.
If you don't need the full desktop version of Multisim, or if you're using a Mac or Chromebook, check out . This is a free, browser-based circuit simulator that runs directly in your web browser.