There is no charge for the key exchange, as long as the key has current support.  If you know that your key has current support, please skip to Step 3.

If the support expiration date is uncertain, email the key serial number to sales@zemax.com and request the expiration date. 

If support has expired, please purchase ZEMAX Support before following the next steps.  The quickest way to purchase support is to go online to www.zemax.com/shop and pay with a Visa, Discover or MasterCard.  For other payment options, please contact sales@zemax.com or your local distributor.  We do not replace keys with expired support, even for a fee.