Unable to delete cookie from javascript

Question

I am on an external site, and I am trying to delete the cookie via javascript.

I did the following in the console:

function deleteAllCookies() {
             


        

Answer 1

I had the same issue. I discovered that the cookie was set under an empty subdomain, e.g. the cookie domain was ".domain.com", and my website was hosted at "sub.domain.com".

To fix I added the cookie domain to the set value

document.cookie = name + "=;expires=Thu, 01 Jan 1970 00:00:00 GMT; domain=.domain.com";

To see what domain the cookie is set to, in Chrome, open dev tools -> resources -> cookies and look at the domain fields.