How often does the word press core check wordpress.org for plug in updates? Is it once a day or more? Is checking for updates triggered by some action or filter?


There are 3 cron events which checks for the updates
1) wp_version_check
2) wp_update_plugins
3) wp_update_themes

These runs twice a day, if you want to see about their occurrence you can install WP Crontrol and check these.

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