What are the differences between session and persistent cookies?

The difference of Session and Persistent Cookies

Session cookies are stored in memory and never written to disk. When the browser close the cookie is permanently lost from this point on. If the cookie contains an expiration date, it is considered a persistent cookie. On the date specified in the expiration, the cookie will be removed from the disk.

Session Cookie (example)

If you see a cookie like this "5558639327dc2336c3a57b8da1353b5", is a session cookie. Leave it there, we don't have to care about this.

Block Session Cookies

If you still want to block also the session cookies before the user accepts, you can do it by navigating to the Advanced Settings > Block Cookies and set "No" the parameter "Allow Session Cookies" as you can see in the below screenshot.