Facebook Page Access Tokens – Do these expire?

Page Tokens expire when the access token expires for the user that the page token was generated from. Edit 6.28.2013: If you extend the user access token and obtain a new page access token for the user, that page token will not expire unless the user de-authorizes your app.

Offline access has now been deprecated, but you are allowed to extend an access token to last for 60 days. If you extend the user’s access token, then the page tokens generated from that user account will also have their expiration extended to match will not expire (edited 6.28.2013). The value for the page tokens may change after being extended, so be sure to grab new page tokens from the user’s /accounts graph connection after extending the user token.

You can continue to extend these access tokens once per day. So you should regenerate the access tokens each day that the user interacts with your app.

See
https://developers.facebook.com/docs/facebook-login/access-tokens/#pagetokens
https://developers.facebook.com/docs/facebook-login/access-tokens/#extending
https://developers.facebook.com/docs/facebook-login/
https://developers.facebook.com/roadmap/offline-access-removal/
https://developers.facebook.com/blog/post/2011/05/13/how-to–handle-expired-access-tokens/

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