When trying to activate online or manually, you are receiving a access denied message to the following path: C:\ProgramData\Forecast5
Ensure that you have administrative permissions on your PC.
If the license still fails, go to the following path: C:\ProgramData\Forecast5
If available, right click on the FRSCT5 file and click Properties.
Go to the Security tab and click Edit:
Type in Everyone and click Check Names. Click Ok.
Select Allow Full Control and click Apply.
You should now be able to activate online or manually.