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<p class="MsoNormal"><span style="color:#1F497D">I have seen this error before and usually the problem is time sync between the SP and IdP.</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt; font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt; font-family:"Tahoma","sans-serif""> users-bounces@shibboleth.net [mailto:users-bounces@shibboleth.net]
<b>On Behalf Of </b>John Lee<br>
<b>Sent:</b> Thursday, August 30, 2012 6:20 AM<br>
<b>To:</b> users@shibboleth.net<br>
<b>Subject:</b> Authentication issue after upgrading to shibboleth-2.5.0-2.1 service provider software</span></p>
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<p class="MsoNormal"> </p>
<p class="MsoNormal"><span lang="EN-GB">Hi,</span></p>
<p class="MsoNormal"><span lang="EN-GB"> </span></p>
<p class="MsoNormal"><span lang="EN-GB">We have the Shibboleth Service Provider software running on a RHEL6 box, which is how users are authenticated to use our web apps.
</span></p>
<p class="MsoNormal"><span lang="EN-GB">After performing a regular yum update to upgrade to the latest: shibboleth-2.5.0-2.1, it is no longer possible to login to our web apps.
</span></p>
<p class="MsoNormal"><span lang="EN-GB">On-screen message is:</span></p>
<p class="MsoNormal"><span lang="EN-GB">--------------</span></p>
<p class="MsoNormal"><span lang="EN-GB">ERROR</span></p>
<p class="MsoNormal"><span lang="EN-GB">An error occurred while processing your request. Please contact your helpdesk or user ID office for assistance.</span></p>
<p class="MsoNormal"><span lang="EN-GB">This service requires cookies. Please ensure that they are enabled and try your going back to your desired resource and trying to login again.</span></p>
<p class="MsoNormal"><span lang="EN-GB">Use of your browser's back button may cause specific errors that can be resolved by going back to your desired resource and trying to login again.</span></p>
<p class="MsoNormal"><span lang="EN-GB">If you think you were sent here in error, please contact technical support</span></p>
<p class="MsoNormal"><span lang="EN-GB">Error Message: Message did not meet security requirements</span></p>
<p class="MsoNormal"><span lang="EN-GB">--------------</span></p>
<p class="MsoNormal"><span lang="EN-GB"> </span></p>
<p class="MsoNormal"><span lang="EN-GB">Have there been any reports of a similar problem, or any suggestions of what the problem might be.</span></p>
<p class="MsoNormal"><span lang="EN-GB">I’ve looked in the following log file and have not found anything obvious:</span></p>
<p class="MsoNormal"><span lang="EN-GB">/var/log/shibboleth/shibd.log</span></p>
<p class="MsoNormal"><span lang="EN-GB"> </span></p>
<p class="MsoNormal"><span lang="EN-GB">If I downgrade to our original version of the service provider software: shibboleth-2.4.3, authentication is fine again.</span></p>
<p class="MsoNormal"><span lang="EN-GB"> </span></p>
<p class="MsoNormal"><span lang="EN-GB">Regards,</span></p>
<p class="MsoNormal"><span lang="EN-GB">John</span></p>
<p class="MsoNormal"><span lang="EN-GB"> </span></p>
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