From last few days, I have been facing a strange issue at product detail page.

At product details page, session is changing.. Old session has been destroyed at new session is being created.

Have inspected, checked cookie and found that frontend cookie has been changed at details page.

Have tried some thing

  • disable all magento 3rd party extensions
  • Checking magento setting delayed with cookie.

Till the issue is persistent at system.

Some info:

  • using magento CE 1.9.1
  • Missing patch:6482,7405,6788,5994,6285


can any one give some idea what is the reason for this section change?

and how to debug why the session has been changing?

  • 1
    Can you retrieve the old session in files / db? Commented Aug 29, 2016 at 12:55
  • no... i did not try it. I have seem that frontend session id has been changes at product page
    – Amit Bera
    Commented Aug 29, 2016 at 13:21
  • 1
    I'm curious about what happened to the old session, if it became invalid for some reason Commented Aug 29, 2016 at 14:50
  • 1
    How long is/was the old session valid? Did you maybe activate some additional session cookie checks such as via, x forwarded for, remote address?! Commented Aug 29, 2016 at 15:47
  • @thanks Anna & Sander. can u please give me an idea.If any code reset the header request,then session is create again? what your thought?
    – Amit Bera
    Commented Aug 29, 2016 at 15:57

1 Answer 1


Issue in an extension, which some observer code is encrypted.It is only working on production url.

So that i did not get any issue at stage version.

There, some bad logic use and here session is recreated.

So. beware about the extensions

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