The Zeiss License Activation Utility not able to resolve activation id


There are multiple possibilities:

     1.There is no internet connection.
     2.The activation id is wrong and not existing
     3.There is a firewall and proxy settings are needed


Workaround / Resolution

A very simple and fast workaround is to use the offline activation.
Check network connection by calling these three urls:



If all of those are working, please check for an existing proxy connection by checking the Internet Explorer:

  • start IE
  • goto Extras
  • goto network options
  • goto connections
  • goto LAN settings

If there is an automatic script or a proxy is entered, please use this configuration in the ZLAU as well. If the user do not have access to this data, he/she has to contact his/her local administration or use the offline activation.