Magento 2: How to disable / remove Secret Key from Admin URL?
A new secret key is created every time you login to Magento Admin. So, there will be a unique key (32 chars long) for each session of your Magento admin login. This key is appended to the admin URL as http://your-admin-url/key/885453c37b1…adf6588/
You will have to Login to admin. Then go to Stores -> Configuration -> ADVANCED -> Admin -> Security -> Add Secret Key to URLs. Then select No and Save Config. This is the way you can disable or remove secret key. Sure Payroll Accountant Login