Unable to delete cookie "_mkto_trk" from parent domain

David_Mezkiriz · ‎04-14-2021

Hi,

I'm trying to delete _mkto_trk cookie when user decides to stop being tracked. I'm under this domain "online.example.com", so the tld is ".com"

The _mkto_trk cookie has been created under this domain ".example.com"

I don't know if it's a cookie restriction, but when I try to delete it, the cookie remains there and it's not removed. These are the features of the cookie.

Domain:

.example.com

Path:

/

Name:

_mkto_trk

HttpOnly:

false

I've tried to do this:

document.cookie = "_mkto_trk=; path=/; domain=.example.com;expires=Thu, 01 Jan 1970 00:00:01 GMT"

but unfortunately it isn't removed.

If I enter this command:

document.cookie

obviously the cookie is not listed, I think because I'm under the "online.example.com" and by cookie restrictions you are not allowed to see cookies of the parent domain "example.com", I don't know if these restrictions are linked to remove them.

My code, initializes the munchkin code "Munchkin.init" , without any domainLevel option.

Munchkin.init('xxx-xxx-xxx');

and it creates the cookie as stated above.

Is there anything I can do to remove the_mkto_trk cookie when customer decides?

Thank you!!

David

SanfordWhiteman · ‎04-18-2021

1. My conditional Munchkin.init() statement, part of the "munchkin-beta.js" file
2. The code that Marketo LPs executes (if and if only I enable the munchkin tracking) Munchkin.init("ABC-123-456", { marketoPageLevelOptions }) which is part of the munchkin.js file.

Not quite... overall, there are 3 calls to a function called init(), but that isn't the way I'd refer to them.

The 1st is a call to a overridden init()that caches Marketo's page-level options.

The 2nd is a another call to an overridden init()that adds user-level config options.

The 3rd is a call to the actual/original Munchkin init()method that passes in a combo of page-level and user-level options.

The 2nd call automatically makes the 3rd call, you don't make the 3rd call yourself but it's there under the hood.

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