#Article with pictures
Foreword: encounter a problem to write down simply, although there is a solution on the net, still keep it for oneself to see
When upgrading WordPress, WordPress will be in the database WP_ Add core to the options table_ The updater.lock record.
If you interrupt the upgrade of WordPress, such as closing the current page and refreshing the page, this record will be generated in the database.
When the next upgrade occurs, WordPress detects the existence of this record and returns "another update in progress.".
Manually delete WP_ Core in options table_ Updater.lock record
Or execute the SQL statement: delete from wp_ options where option_ name='core_ updater.lock';