Option 1: User able to seek assistance from internal admin at your organization. Internal admin should follow below steps:
1 - Login to http://www.rankalpha.net:9015 (as admin).
2 - Click on the Menu and select Active User tab.
3 - Delete button is used to terminate other users. Click on delete button to remove other user from Active User list. Thereafter, user will be able to login again to www.my1port.com with no issue.

Option 2: Alternatively, user able to wait for next 5 minutes. This is due to User login history at “Active User List” will be removed automatically by system after 5 minutes. Thereafter, user will be able to login again to http://www.rankalpha.net:9015 with no issue.

Option 3: If an internal admin having similar issue, users are recommended to contact our helpdesk support team at 03-8073 8488 or email us at helpdesk@rankalpha.com for further assistance.

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This issue came out due to outdated version of Google Chrome. Here simple steps to solve:
1 - Open Google Chrome then click icon 3 dots (at the top right of the page)
2 - Then select Settings menu
3 - Click About menu (at left side of page)
4 - Google will auto updated and display 'Google Chrome is up to date'