CEE Relays Ltd

Tel:   +44 1753 576477    Fax: +44 1753 825661
FAQs: Error 155
This error code is unique to PTW users running a Network license (red hardware key).  If you use a standalone hardware key (white or green) and you experience this error, please contact us. 

If PTW fails to start and displays error code 155, then this is because the PTW network license manager needs to be updated. See Updating PTW License Manager for more information.