I have installed Fresh Magento 2.3.4, and set multiple store with websites on sub-domains. I want customers to signin in one store and then automatically signedin on another store on sub-domain. I have set cookie domain to like example.com (where sub-domain is sub.example.com). It isn't working. Plus also did set cookie-domain to ".example.com", it then makes customer and admin signin pages reload to again signin page. Anyone has idea about it?
Working now. Just add "example.com" to cookie domain and leave cookie path empty. Then clear Magento cache and browser cookies or try incognito mode. Working fine.