If you activate a license offline in the ZEISS License Activation Utility (ZLAU), you will receive a "*.xml" file (for PC-bound licenses) or a "*.lic" file (for dongle licenses) For a detailed explanation of how to obtain the files, please click here.
Step 1: Open the ZEISS License Activation Utility and select "Import License or response file". The right button is grayed out and can no longer be selected.
Step 2: Select the received "*.xml" file/"*.lic" file and click "Open".
The license file is now successfully imported.