License key doesn't work

[michel...@libertysurf.fr]

# //  ModelSim PE Student Edition 10.2a Mar 15 2013
# //
# //  Copyright 1991-2013 Mentor Graphics Corporation
# //  All Rights Reserved.
# //
# //  THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION
# //  WHICH IS THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS
# //  LICENSORS AND IS SUBJECT TO LICENSE TERMS.
# //
# // NOT FOR CORPORATE OR PRODUCTION USE.
# // THE ModelSim PE Student Edition IS NOT A SUPPORTED PRODUCT.
# // FOR HIGHER EDUCATION PURPOSES ONLY
# //
# vsim work.test_counter
# ** FATAL ERROR: ModelSim PE Student Edition licensing failure due to one or more problems with the license key such as:
# - it is not found
# - it has expired
# - it is not for this user
# - it is not for this computer
# - it is not for this version of ModelSim PE Student Edition.
#
# Please go to http://www.model.com and download an updated copy of the ModelSim PE Student Edition.
# Error loading design


Best regards

[michel...@libertysurf.fr]

Thanks,

With administrator rights it's OK.

What should I do that it works for all users?

Merci