Pretty URLs causing LOGOUT

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I have multiple sites which all are experiencing the same automatic logout problem.

After logging into the the site as an Administrator, and upon navigating from the home page to a any sub-page, Concrete5 automatically logs me out...

This seems to be a Pretty URL issue since I can access the same page through site-map>visit without being logged out.

This is happening on multiple sites that have been around for years. version: 5.6.3.4......

novologic
 
hutman replied on at Permalink Reply
hutman
Do you know if your server has recently enabled Varnish Caching? I have seen this issue when that is turned on in several cases, I know there was a bout of time where Bluehost was turning this on for people and it was breaking their sites.
novologic replied on at Permalink Reply
novologic
Sorry for the very late reply... We host our own sites on amazon using Ubuntu. This has become a huge issue with all of our concrete sites.
ConcreteOwl replied on at Permalink Reply
ConcreteOwl
+1 for @hutman's suggestion.
I have turned off varnish caching for my concrete sites as it caused havoc when users were logged in and editing certain pages.
Instead of being returned to the previous page state it would deliver a page state that was out of sync.