FLEXnet error -5,xxx "No such feature exists"

After installing the license information and then attempting to run ENVI or IDL the following error message appears:

% LICENSE MANAGER: No such feature exists.
Feature: idl
Filename: C:\Program Files\Exelis\license\license.dat
License path: C:\Program Files\Exelis\license\license.dat
FLEXnet error:-5,xxx
For further information, refer to the FLEXnet Licensing End User Guide.

The FLEXnet Minor Error Number ( .xxx) is a unique identifier that can sometimes provide more detail to the general FLEXnet Error Number. Below are potential variations and their associated solutions:

FLEXnet error: -5,222 or -5,357

• This error can sometimes occur when trying to run an unlicensed feature. For example; the license is ENVI only and a user is attempting to run ENVI+IDL.

• Usually a corrupted license file. Have another copy sent as an attachment. Copy the new license file directly to the correct license folder.

• There may be an old license, or an eval license ( *.lic) that is being read instead of a new one.

• Some changes to the computer, such as replacing the motherboard, or moving the license to another computer, can result in a hostid change. This can be verified by comparing the hostid displayed using the Exelis License Wizard against that found in the 'license.dat ' file which can be opened with a plain text editor.

FLEXnet error: -5,412

• This means that the FLEXnet utilities daemons have not been upgraded to the version that IDL 8.x uses. Please update your lmgrd and restart your license server.

This error can sometimes occur when opening ENVI, and the license feature that the error mentions is "idl_rt". This is usually indicative of another error, and further troubleshooting can be done by opening standalone IDL, which will usually provide a more detailed error (such as incorrect Host ID).