This licensing error can occur when activating/deactivating a web-activated license, most commonly standalone licenses. 

On this page:

Error Message:

Resolution:

1. You must be logged into the machine as Administrator to run the license cleaning utility, lsclean.exe. 
   
   

2. Run a command prompt explicitly as Administrator (this is a right-click option):

   
   
   

3. Change the folder to the C:\Program Files\Computers and Structures\[PRODUCT NAME\CSiLicensing folder and type the following command:

   lsclean -fixrevoke