Total Posts: 306
If you change the clock on the hour / two forward on the computer, then let?
Then the problem is solved by extending the life of cookie in admin.
The default setting is 1 hour.
If it is not help for different browsers, then try to understand the reason for exploring class /app/code/core/Mage/Core/Model/Session/Abstract/Varien.php
$cookieParams = array(
‘lifetime’ => $cookie->getLifetime(),
’domain’ => $cookie->getConfigDomain(),
’secure’ => $cookie->isSecure(),
’httponly’ => $cookie->getHttponly()