Despite successfully installing your Magento site, you may still get this error 404 Page Not Found in admin’s pages. There are several reasons why it occurs. It’s better to know the cause first, so we’ll go into that and then show you the suitable solutions.
Problems & Solutions For 404 Error Page Not Found In Admin
Issue 1: Result of installing/ updating Magento extensions
You’ll run into the 404 error in one of the following cases:
- After installing a new Magento extension
- Upgrading an extension
- After applying Magento 2 core or extension patches.
- Flush Magento 2 Cache via the Command Line
php bin/magento cache:clean rm -rf var/cache/* rm -rf var/generation/*
Then flush cache: Admin > Systems > Cache Management.
Log out then try logging in again to see if the error is gone.
In a few cases, the issue may be:
- The compilation hasn’t been restarted
For this situation, use this command to check if the production mode is activated:
php bin/magento deploy:mode:show
If it shows the current applied mode is production, run
php bin/magento deploy:mode:set production. The applied mode is now set again, you can log out and try re-accessing the admin page.
- An incorrect admin URL
You probably applied the wrong admin URL, leading to the 404 error to happen. Run the following command to learn a correct URL leading to the Admin Panel:
php bin/magento info:adminuri
Issue 2: New installation on Ubuntu, CentOS, Debian
The ‘404 Error Page Not Found’ message will appear when you try to access a page after an installation on Ubuntu or other systems. The cause is that your server hasn’t enabled rewrite mode.
- Enable rewrite mode
Use this command line
sudo a2enmod rewrite
- Edit configuration file
sudo vi /etc/apache2/apache2.conf to edit the Ubuntu file
<Directory /var/www/> Options Indexes FollowSymLinks AllowOverride None Require all granted </Directory>
<Directory /var/www/> Options Indexes FollowSymLinks AllowOverride All Require all granted </Directory>
Now you need to restart Apache:
sudo service apache2 restart or
sudo /etc/init.d/apache2 restart
Issue 3: Incorrect permission role settings
Because the role isn’t configured correctly, you may encounter the 404 error in the Magento backend.
You can solve this issue by resetting the permission role of your administrator.
- Step 1: Go to the Admin Panel> Systems> Permission> User Roles
- Step 2: Select the role name that needs to be edited, e.g.: ‘Administrators’
- Step 3: Switch to the ‘Role Resources’ menu. Set the ‘Resource Access’ to ‘All’.
- Step 4: Click Save.
- Step 5: Clear cache and check again for the error.
Issue 4: Messy frontend
While we’re familiar with the scenario where issues in the backend affect the frontend, it can be the other way around. For instance, the 404 error may result from a messy frontend page.
Try running this command line to fix the issue:
php bin/magento setup:static-content:deploy
This tutorial has gone through all 4 reasons which may cause the Magento 2 “404 error page not found” in the Admin page. If you’ve been in this situation, the mentioned solutions can be helpful.
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