Specifications

APPENDIX B: LICENSING TROUBLESHOOTING AND FAQS
INTRODUCTION
ALTERA CORPORATION ALTERA SOFTWARE INSTALLATION AND LICENSING ■ 80
Introduction
This appendix includes tips to troubleshoot licensing problems, answers to
common questions about licensing, and detailed information about Altera
license file formats. For more information, use the Software Licensing
Troubleshooter available in the Support Center at the Altera website or visit
the Altera Licensing page.
License File Troubleshooting
This section provides troubleshooting information for the license.dat file
and related licensing files.
LM_LICENSE_FILE Environment
Variable
Multiple software tools on a system can use the LM_LICENSE_FILE
environment variable to specify the license locations. Use a semicolon (;) on
Windows and a colon (:) on UNIX or Linux systems to separate multiple
locations in the variable. For example, the full version of the ModelSim
software uses the same LM_LICENSE_FILE environment variable. When
modifying the variable to add the Altera license location, do not remove any
existing license locations required for software from other vendors.
license.dat File
Refer to “License File Format and Examples” on page 91 for details for each
entry in the license.dat file. If you are experiencing problems with the
license, verify that the following conditions are met:
■ Conditions listed in “License File Conditions” on page 41
■ No features are expired.
■ In network licenses, all paths to license daemons are correct. If the path
name has spaces in it, enclose the full path in quotation marks, not
Microsoft smart quotation marks.