To disable maintenance mode in Magento 2, just follow these steps:

Step 1: Access your Magento Installation
Ensure that you have access to your Magento 2 installation, either through SSH or FTP.

Step 2: Locate the Maintenance.flag File
Using your preferred method to access your Magento files, navigate to the root directory of your Magento installation.

Look for a file named `maintenance.flag`. This file is created during maintenance mode to inform Magento that the store is under maintenance.

Step 3: Remove or Rename the Maintenance.flag File
To disable maintenance mode, you can either remove or rename the `maintenance.flag` file.

To remove the file, simply delete it from the root directory of your Magento installation.

Alternatively, you can rename the file to something like `maintenance.flag.bak`. This action prevents Magento from recognizing it as the maintenance flag file.

Step 4: Clear Cache (if necessary)
If your Magento store has a caching mechanism in place, you may need to clear the cache for the changes to take effect. This step ensures that the updated file system is reflected in the store.

You can clear the cache by running the following command from the root directory of your Magento installation:

“`
php bin/magento cache:clean
“`

Step 5: Verify Maintenance Mode is Disabled
After removing or renaming the `maintenance.flag` file and clearing the cache, visit your Magento store in a web browser. The store should now be accessible to users, indicating that maintenance mode has been disabled.

That’s it, all done! You have now successfully disabled maintenance mode in Magento 2, allowing your store to operate normally again.