When trying to activate your KeyShot floating license, then the service doesn't start looking at your Luxion log file will show the information below there are some steps we can try.

(lmgrd) license manager: can't initialize:Invalid license file syntax.
(lmgrd) License Path: "This would be the path where the license is located"
(lmgrd) FlexNet Licensing error:-2,40027

How to do a Fresh Install of the KeyShot Floating License.

1.  Open Luxion License Server Software.
2.  Click on License Folder button.
3.  Click Stop Service in your Luxion License Server software.
4.  Once the Service has stopped close your Luxion License Server software.
5.  Go to the License Folder and Delete all files in the folder.
6.  Go to "C:\Program Files (x86)\Luxion License Server" folder.
7.  Open lmtools.exe
8.  Select Luxion License Server within the list.
9.  Go to Config Service Tab.
10. Make sure that Luxion License Server is in the Service Name window, then click Remove Service button.
11. Go to "C:\Program Files (x86)\Luxion License Server" Folder.
12. Launch Luxion Licednse Server.
13. Click on Install License tab (Field should be empty).
14. Download your license file from your email and click New License button.
15. Load your KeyShot floating license file