I need urgent help as to how to log into my admin page. Everything is working fine after migration but admin page refuses to log me in. I have tried so many suggestions here. But not is working for me. I use Magento V2.2.3
I changed my base urls with: php bin/magento setup:store-config:set --base-url="http://new_url/" then cleared cache with php bin/magento cache:flush
I tried to log in to admin but no success. Then I tried to change web/secure/base_url to http manually in the database but this did not had any effect also.
What helped in the end was the answer from Bradley saying to change app/etc/env.php file and change the name of your admin url. I was then able to log in to backend.
'backend' => [ 'frontName' => 'new_admin_backend_name' ]