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copied!<p>I feel for you - I've fought this for a long time and never found a solution, but found a fix <strong>that worked for me</strong> so hopefully it will at least keep this issue under control until you can find the culprit. (And if you do, please post it here).</p> <p>Now, I've got a slightly different environment than you (I'm using CF on the backend) so keep that in mind.</p> <p>I also tried the whole "FlexClient.getInstance().id = null;" thing too and it didn't work <em>by itself</em>, but it was <strong>how</strong> and <strong>where</strong> I implemented it that made it work.</p> <p>So, this is what <em>I</em> did that made the problem go away.</p> <p>On my main form, <strong>before ANY</strong> RemoteServer calls are made, I setup a creationComplete handler and placed this code you already know and love:</p> <pre><code>// Not sure if this is needed anymore, but I'm leaving it in FlexClient.getInstance().id = null; </code></pre> <p>Next, in my <strong>very first call</strong> to the server, I gracefully handle the failure, and clear that stinking ID out again:</p> <pre><code> public function login(event:Event): void { Swiz.executeServiceCall(roUsers.login(), function (event:ResultEvent): void { // Handle a successful login here... } , function (faultevent:FaultEvent): void { // This code fixes this issue with IE tabs dying and leaving Flex with a Duplicate Session problem. if (faultevent.fault.faultString.indexOf("duplicate")) { FlexClient.getInstance().id = null; Swiz.dispatchEvent(event); } }); } </code></pre> <p>And it <em>worked</em>.</p> <p>Basically, try the call, and if it fails for the duplicate session thing, then clear out that ID and reissue the call.</p> <p>The key point being that <strong>I don't think clearing out the ID works until you've made at least one call to the server</strong>. Once you do, it worked like a CHARM for me, and in <strong>all</strong> of my apps.</p> <p>Note that I'm using the SWIZ framework above so just translate it to your own world.</p> <p>By the way, I've never seen this error in any other browser but IE, and I believe it <em>may</em> have something to do with the infamous Dead Tab Issue that IE suffers from.</p> <p>If the above doesn't work, I also know of a few changes to some config files on the server that might help.</p> <p>Good luck my friend!</p>

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