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Error # 20 indicates that a request to update the license has failed.

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Troubleshooting and resolution

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  • The application attempts to contact the server approximately every 10 3-5 minutes to update the license. This does not happen, however, if the solver is in use. If the license is no longer assigned to that application, update will fail, and the software will again request the license. If this request fails, Error # 20 will result. This allows the license server to reclaim the license and grant it to another user when there is a problem with either the software or the computer.

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  • The hardware key, or the port to which it is attached, may have become corrupted. In this case, send us the locking code of the computer with the license server and we will send you a temporary license in exchange. Echoid.exe can be run on the license server to retrieve the computer locking code. If the temporary license resolves the error, you may send us the key to be replaced.


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Related Emails:

  • Email "Error 20": Licensing error 20 resolution, description, and triggers (Kim → Mike, 11/14/2012, ID 9896208)

See also