http://blogs.msdn.com/b/rjacobs/archive/2011/04/29/how-to-detect-if-the-net-framework-platform-update-1-is-installed.aspxHumans Go to Control Panel / Programs / Programs and Features / View Installed Updates Use the Search Box to search the updates for KB2495593 KB2478063 Or if you prefer, search the list your self Microsoft .NET Framework 4 Platform Update 1 - Runtimeen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/rjacobs/archive/2011/04/29/how-to-detect-if-the-net-framework-platform-update-1-is-installed.aspx#10160126Mon, 02 May 2011 19:58:06 GMT91d46819-8472-40ad-a661-2c78acb4018c:10160126Pablo Castilla<p>Hi Ron,</p> <p>We are having problems persisting our instances using AppFabric. If they don&#39;t persist it goes back to the previous persitence point and cause trouble to us.</p> <p><a rel="nofollow" target="_new" href="http://support.microsoft.com/kb/2478063/en-us">support.microsoft.com/.../en-us</a> &lt;-- the MaxConnectionRetries could apply to our scenario? I suppose so but I prefer to ask... it is compatible with the current version of appfabric?</p> <p>Thanks in advance.</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=10160126" width="1" height="1">