What is the easiest way to update thousands of users' "created date"?
This answer assumes that changing the created dates is a one-time action, and that other modules in your Drupal site do not need to react to the users being updated.

IMHO, if you're looking at modules to do this, you're making things way too complicated for yourself. A simple SQL query should to the job:

UPDATE users SET created = 1234567890 WHERE uid &lt;&gt; 0;


You can choose / calculate the timestamp yourself (where it says 1234567890 in my example). I'm excluding the record with user id 0 because this repesents the anonymous user who does not have a created date.

How to run this query:


From a MySQL admin tool, like phpMyAdmin or HeidiSQL, whatever you have to access your database;
From the command line using the mysql command (don't know if this works on Windows):

$ mysql -u user_name -p -e 'UPDATE users SET created = 1234567890 WHERE uid &lt;&gt; 0' database_name

From the command line using Drush:

$ drush sql-query "UPDATE users SET created = 1234567890 WHERE uid &lt;&gt; 0"