Clear Your Cache and Cookies for Gmail This is the most likely solution. A corrupted or outdated cookie or cached file can prevent a website from loading correctly. While you are on the Gmail page (where it's not loading), click the padlock icon in the address bar on the far left. In the pop-up menu, click "Clear cookies and site data". Click "Clear" to confirm. Reload the page. You will have to sign in to your Gmail account again, but this often resolves the issue. Try Private Browsing Mode, If Gmail loads correctly in Private Browsing Mode, an extension is almost certainly causing the problem.