Which cookies are neccesary for the chatbot
Whenever we reject cookies on our website we see the chatbot doesn't appear on the website. can you tell us the necessary cookies which we will then enables on our website.
THi there 
Voiceflow’s chat widget doesn’t set any browser cookies at all – it only relies on Web Storage for conversation persistence:
• localStorage (default) – lets the conversation survive page reloads and future visits.
• sessionStorage – survives page reloads during the current browser session only.
• memory – no storage; conversation resets each refresh.
If your cookie-consent tool blocks access to localStorage / sessionStorage when users click “Reject”, the widget can’t initialise and will stay hidden – which is what you’re seeing.
What you can do:
Whitelist localStorage access for your own domain (no third-party cookie is involved) so the Voiceflow script can save a small JSON object under the key
OR
Tell the widget not to use storage at all by adding the persistence setting:
So there are no "necessary cookies" to enable – just make sure your consent manager isn’t blocking localStorage for the page, or switch the widget to
Docs: https://docs.voiceflow.com (see “Chat persistence”).
Voiceflow’s chat widget doesn’t set any browser cookies at all – it only relies on Web Storage for conversation persistence:
• localStorage (default) – lets the conversation survive page reloads and future visits.
• sessionStorage – survives page reloads during the current browser session only.
• memory – no storage; conversation resets each refresh.
If your cookie-consent tool blocks access to localStorage / sessionStorage when users click “Reject”, the widget can’t initialise and will stay hidden – which is what you’re seeing.
What you can do:
Whitelist localStorage access for your own domain (no third-party cookie is involved) so the Voiceflow script can save a small JSON object under the key vfrc.OR
Tell the widget not to use storage at all by adding the persistence setting:So there are no "necessary cookies" to enable – just make sure your consent manager isn’t blocking localStorage for the page, or switch the widget to
memory persistence.Docs: https://docs.voiceflow.com (see “Chat persistence”).
Voiceflow
Build, manage, and deliver chat and voice agents for customer support and beyond.