

This post on Google support explains how to turn on cookies on Chrome and fix possible problems. Cookies are files created by sites you visit that keep you signed in.

Many Gmail users, however, experience difficulties staying signed in on their computers. You won’t have to insert your login credentials now and then.
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Staying logged in to Gmail lets you quickly access your account and messages at any time. Keep entering your Gmail logins every time you want to sign in? This post “How to stay signed in to Gmail” suggests five ways to troubleshoot the issue in order to sign in anytime automatically.
