Question / Problem:
The activate option in Kofax License Utility is grayed out after installing DTS.
Answer / Solution:
During the first start of the License Utility it is trying to write the server name for the license server into the file SALConfig.xml under C:\ProgramData\Kofax\KTT\Config. In some cases the this is not possible because of the lack of permission.
In this case you can close the License Utility and start it again with "Run as Administrator". Afterwards you can go to File -> Select Server and enter the hostname of the license server.
Another possible reason for this could be, that the Kofax License Server service is not started.