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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin: 10px 0 0 0; margin-top: 0">The limited information here doesn't really show anything interesting other than your browser is breaking things in some way, so I would be looking at cookies perhaps.</p> <p style="margin: 10px 0 0 0">Adding JSESSIONID into the log is a good starting point to detect whether the client is properly returning its cookies but my suspicion is that in addition to the SP misbehaving with some kind of double login request here, the client may not be resuming its Java session when Azure returns it to the IdP. That's really the only obvious reason for it not finding the flow conversation.</p> <p style="margin: 10px 0 0 0">I don't know that we've investigated the SameSite implications on proxying all that much, but since it is a POST operation, it's possible that could be involved if you're not using the SameSite filter/workaround, but it would depend what the browser is. I don't know what else offhand would break it.</p> <p style="margin: 10px 0 0 0">Anyway, the JSESSIONID is the key issue. If it shows up with a particular value up until before the exception and then flips to something else, that proves the cookie's not getting sent back in.</p> <p style="margin: 10px 0 0 0">I'd also switch browsers and see if the reproducible behavior isn't so reproducible.</p> </td>
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