If you see the following error message "No more licenses available"  when you open the QIAGEN CLC Workbench software,
 

it is an indication, that all available network license seats are currently used by other instances of the same type of CLC software (e.g. CLC Genomics Workbench). In other words, there are no more license seats available for you to run the software.
 

Once one of this other software instances gets closed, that license seat becomes available for another user.
 

The same error message can also be found in the license server log file, which is called "licenseserver.log" and is stored under the CLC Network License Manager/CLC License Server installation location. The network license administrator can use information in this file to determine the current network license usage, e.q. to identify which machines are using the network license.

If you wish to purchase additional network license seats, such that more users can simultaneously run your CLC software, please get in contact with your local CLC sales representative by emailing bioinformaticssales@qiagen.com with your request.