: Ensure there are no extra spaces at the end of the serial number, as this can cause errors.
Enter your unique (found on your Certificate of Ownership or packing slip) next to the Multisim 14.3 entry. Click Activate . Option 3: Offline Activation how to activate ni multisim 14.3
Input your serial number into the fields for both and Ultiboard 14.3 . Click Activate and then Finish . 2. Using the NI License Manager (Post-Installation) : Ensure there are no extra spaces at