📍 Large migrations often crash on cheap hosting. Ensure your disk space is at least 250GB to handle the compressed file and the extraction process. If you’d like, I can help you: Write a custom PHP function to automate this Troubleshoot timeout errors during the import
Even after overcoming the size limit, you might encounter other issues. Here are some of the most common ones and how to fix them.
chown -R www-data:www-data uploads find uploads -type d -exec chmod 755 {} \; find uploads -type f -exec chmod 644 {} \;
Use FTP to upload the uploads folder directly to the new server. Alternatives to All-in-One WP Migration
The absolute simplest way to lift the limit is by editing the plugin’s source code directly. While the plugin developers frequently patch these workarounds, specific legacy versions or precise code edits still bypass the restriction. Method A: Editing the Constants File Log into your WordPress dashboard. Navigate to > Plugin File Editor . allinone wp migration 100gb fix
To bypass the upload limit in All-in-One WP Migration without paying for the Premium extension, you generally need to modify the plugin's code or adjust your server settings. 🛠️ The Quickest Fix: Edit Plugin Code
Select from the dropdown menu in the top right. Step 2: Edit the Constants File
The free version of All-in-One WP Migration caps imports at 512MB to encourage users to buy their Unlimited Extension.
If you can source version 6.77 of the plugin, you can manually override the file size limit by following these steps: Open the Plugin Editor : Navigate to Plugins > Plugin File Editor in your WordPress dashboard. Select the Plugin All-in-One WP Migration from the dropdown menu in the top-right. constants.php : Find and click on the constants.php file on the right-hand side. Locate Max File Size : Search (Ctrl+F) for the string AI1WM_MAX_FILE_SIZE Change the Value : You will see a line like define( 'AI1WM_MAX_FILE_SIZE', 2 << 28 ); . Change it to a higher byte value for 100GB: define( 'AI1WM_MAX_FILE_SIZE', 2 << 28 ); (approx. 512MB) define( 'AI1WM_MAX_FILE_SIZE', 100 * 1024 * 1024 * 1024 ); Update File Option 2: Pre-Patched Plugins đź“Ť Large migrations often crash on cheap hosting
Run a database optimization plugin before exporting. Delete old post revisions, trashed comments, and expired transients to slim down the file size.
Check your hosting dashboard to ensure you have adequate storage headroom before executing the restore. Clean out old backups, system logs, and staging environments to clear up space. To ensure a smooth migration, please let me know:
Click next to the file name to begin the migration locally on the server. Fix 3: Modify Server Configuration Files
On your old 100GB site, go to All-in-One WP Migration > Export . Here are some of the most common ones and how to fix them
Your server kills the process if it takes too long.
Add this to your destination site’s wp-config.php (temporarily):
If you want, I can provide step-by-step commands tailored to your server type (shared/managed, cPanel, SSH access available) — tell me which one and whether you have SSH/SFTP access.
Even if the plugin accepts the file, your server might still block it. Log into your hosting cPanel, open the or INI Editor tool, and set these values: upload_max_filesize = 105G post_max_size = 105G memory_limit = 2048M