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"authentication failed: 0"

Re: "authentication failed: 0"

by Matthew Ballard -
Number of replies: 0
With debugging turned on, I get:

Nonce Expired. Your NonceLifeTime may be too short at /opt/webwork/webwork2/lib/WeBWorK/Authen/LTIAdvanced.pm line 687.

$NonceLifeTime = 60 in the LTI_authen.conf seems insufficient. Experimentation gives 120 as the roundest and lowest value which does not generate the error.