_:n912838b9848241bdb9fa73fb1e091176xb1
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"I have an access policy to provide single sign-on amongst a set of Windows (NTLM) authenticated web sites. I have set up a &apos;Logout URI Include&apos; in the &apos;Configurations&apos; of the Access Profile. For the most part logging in and out works quite well.&amp;nbsp;\n&amp;nbsp;Occasionally however logging out throws up some problems. The following events usually do it:&amp;nbsp;\n&amp;nbsp;- URI it takes longer than the timeout value to display the page, then browse to another page.\n&amp;nbsp;- Stay on the logout page for a long time then try and visit the site again.\n&amp;nbsp;- During the logout timeout period start hitting other pages on the site.&amp;nbsp;\n&amp;nbsp;The following message is displayed by the APM. It&apos;s not terribly friendly, but clicking on the link will let you log in again but will create unnecessary APM sessions:&amp;nbsp;\n&amp;nbsp;Access policy evaluation is already in progress for your current session.\n&amp;nbsp;You may see this message, if you are using a different browser tab than the one where you started the access policy initially. Please continue to finish your access policy in the previous browser tab, and close this current window immediately.&amp;nbsp;\n&amp;nbsp;If you have reached to this message due to some other error, click here for creating a new session.&amp;nbsp;\n&amp;nbsp;Has anyone got any suggestion on why this is happening, where I can find more info on problems with APM sessions and logging out or how to avoid this problem.&amp;nbsp;\n&amp;nbsp;Regards,\n&amp;nbsp;Darryl&amp;nbsp;&amp;nbsp;"
<https://community.f5.com/discussions/technicalforum/access-policy-evaluation-is-already-in-progress-for-your-current-session-/178848>