Bulk password reset is available only for users that have an email address.
Tip: You can export a user list from the Users List page to use for bulk password reset operation. Select the User ID as the only attribute to include in the file. See View, filter, and export user list.
The header row in your CSV file contains only one column with userId as the value.
The following is a sample CSV file to help you get started:
userId
user1
user2
user3
user4
Download a sample file: ResetPassword.csv
How
to perform a bulk password reset