====== Reset Web Password for User admin ======
To reset the Element Manager default admin password to the default of Admin123$, use the following command in a Linux shell:
  emtool resetadminpassword

To reset the Element Manager login source to the default operating system authentication, use the following command in a Linux shell:
  emtool resetloginsource

Source: [[https://documentation.avaya.com/en-US/bundle/ImplementingandAdministeringMediaServer_r8.0/page/Unable_to_access_EM_due_to_a_password_issue.html|Avaya Support]]