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AR# 63683: Licensing - How does an Activation license become "untrusted"
Licensing - How does an Activation license become "untrusted"
activation license was installed on my machine.
When I run the following command "xlicsrvrmgr | xlicclientmgr -v"
to view the trusted storage, I receive output similar to the following showing that a license is untrusted.
U if untrusted . D if disabled ..FulfillmentType ...Expiry Count Fulfillmentid ProductID
U.6 permanent 1 211467462 209855566
> xlicclientmgr.bat -l "Seq No" Status Date Time Reference 1 Recover 2014-09-02 16:14 "" 2 UnTrusted 2014-09-02 11:11 ""
What causes the license to become untrusted?
How the Trusted Storage gets broken is not
indicated in the license manager status information.
The records can become untrusted / broken if anchoring,
binding, or windback (timing) parameters are modified.
Binding: A capability used with
trusted storage where one or more properties of a system, combined together
into a unique identifier, are used to ensure that license rights held in
trusted storage are not copied to another system.
Anchoring(anchor): A link
between the system and the trusted storage that is used to detect whether
trusted storage has been tampered with, deleted, or restored. Anchors are also
used to ensure that information in
trusted storage about trial licenses persists beyond the expiration date.
Windback: A condition where the
system clock has been set to an earlier date or time. One reason users change
the system clock is to extend the license duration.
Terminating Vivado or changing the
LM_LICENSE_FILE variable should not cause an issue.
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