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Bugs
Error message appears "Third party cookies must be enabled for GTM Preview to work"
When Da Vinci is enabled, I can't use GTM. I get this error "Third party cookies must be enabled for GTM Preview to work"
Of course, browser settings are fine. When I disable Da Vinci, everything works as usual.
Answer
This is a new feature - many people were reporting having problems with GTM Preview not working and the solution was to enable 3rd party cookies.
Give it a try - go in Chrome preferences, under Site Settings / Cookies and site data, and activate "Block third-party cookies".
Then try to launch GTM Preview and you will notice it simply doesn't work.
It will automatically show if GTM is supposed to be in preview mode, but it can't activate it.
Let me know if you still think you are getting this error and you shouldn't.
Customer support service by UserEcho
This is a new feature - many people were reporting having problems with GTM Preview not working and the solution was to enable 3rd party cookies.
Give it a try - go in Chrome preferences, under Site Settings / Cookies and site data, and activate "Block third-party cookies".
Then try to launch GTM Preview and you will notice it simply doesn't work.
It will automatically show if GTM is supposed to be in preview mode, but it can't activate it.
Let me know if you still think you are getting this error and you shouldn't.