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<p class="MsoNormal"><span style="font-size:11.0pt">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">We have observed an uptick in reports from users receiving the following error message. They report not clicking the back button, and some also report this being their first login attempt of the day.<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt">Error Message to Users:</span></b><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">You may be seeing this page because you used the Back button while browsing a secure web site or application. Alternatively, you may have mistakenly bookmarked the web login form instead of the actual web
site you wanted to bookmark or used a link created by somebody else who made the same mistake.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Left unchecked, this can cause errors on some browsers or result in you returning to the web site you tried to leave, so this page is presented instead.<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt">Log Entry:</span></b><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">ERROR [net.shibboleth.idp.authn.ExternalAuthenticationException:91] – x.x.x.x - net.shibboleth.idp.authn.ExternalAuthenticationException: Error retrieving flow conversation<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> at net.shibboleth.idp.authn.ExternalAuthentication.getProfileRequestContext(ExternalAuthentication.java:227)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Caused by: org.springframework.webflow.execution.repository.NoSuchFlowExecutionException: No flow execution could be found with key 'e1s2' -- perhaps this executing flow has ended or expired? This could happen
if your users are relying on browser history (typically via the back button) that references ended flows.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> at org.springframework.webflow.execution.repository.support.AbstractFlowExecutionRepository.getConversation(AbstractFlowExecutionRepository.java:172)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Caused by: org.springframework.webflow.conversation.NoSuchConversationException: No conversation could be found with id '1' -- perhaps this conversation has ended?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> at org.springframework.webflow.conversation.impl.ConversationContainer.getConversation(ConversationContainer.java:126)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Here are some questions:<o:p></o:p></span></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoNormal" style="mso-list:l0 level1 lfo2"><span style="font-size:11.0pt">Is the error message associated with the error in the log?<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo2"><span style="font-size:11.0pt">What do I need to look at, or where should I look, on the IDP servers? We have three servers behind a load balancer in Azure.<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo2"><span style="font-size:11.0pt">When working with users, we recommend clearing all browser cookies and caches. However, this does not resolve the issue.<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-ligatures:none">To be honest, I’m not sure what questions I should ask. If I find something in the response that matches our situation, I will post more specific follow
up questions.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-ligatures:none">Thank you,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1F497D;mso-ligatures:none">Dong Lee<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1F497D;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1F497D;mso-ligatures:none">Identity Management & System Integration
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri Light",sans-serif;color:#1F497D;mso-ligatures:none">Center for Information Technology Services
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Calibri Light",sans-serif;color:#1F497D;mso-ligatures:none">University of Maryland, Baltimore<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Aptos Display",sans-serif;color:#0E2841;mso-ligatures:none">410-706-3027<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-ligatures:none"><a href="mailto:dlee@umaryland.edu"><span style="color:#0563C1">dlee@umaryland.edu</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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