On your computer browser, if you cannot Stay Signed into the Ancestry account and get the error message “Third-Party or Local Storage Error,” you would need to make a few simple changes to the browser you use. This error comes up because cookies are not enabled on the browser. Here is the list of simple steps which you can go through to fix this error. Steps for stay logged into the ancestry.com Below we have given some steps about logged into ancestry.com account. In Google Chrome • On your computer, open Chrome. • At the top right, click More Settings. • Under “Privacy and security,” click Site settings. • Click Cookies. • From here, you can: • Turn on cookies: Next to “Blocked,” turn on the switch. • Turn off cookies: Turn off Allow sites to save and read cookie data.