Answer by Sergey Golubev for Magento losing cookie when login (switch from...
Try to change System->Configuration->Web->Session Cookie Management->Use HTTP Only to "No" and clear the cache.
View ArticleMagento losing cookie when login (switch from HTTP to HTTPS)
I have a Magento 1.7.0.2 installation which loses session data when logging in. It logs in correctly from main page (HTTP) and works fine until I go to Cart page and click checkout. Then it leads to...
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