Moving your website to a new host should be an exciting milestone, but it often turns into a technical nightmare when the progress bar stops moving. If you are trying to fix WordPress migration stuck or failed errors, you are likely dealing with server resource limits or file integrity issues. Whether you are using a plugin like All-in-One WP Migration or Duplicator or performing a manual transfer, migrations typically fail because of three things: timeout limits, file size restrictions, or database incompatibilities. Understanding why the process halted is the only way to bypass the loop and get your site live on its new home. In this guide, we will break down the most effective methods to troubleshoot and resolve these common migration hurdles.

1. Increase PHP Limits to Fix WordPress Migration Stuck or Failed Errors

The most common reason a migration gets “stuck” at a specific percentage (usually 90% or 100%) is that the server has reached its execution limit. Your server’s PHP configuration has a timer; if the migration takes longer than that timer allows, the server kills the process.

To resolve this, you need to increase these limits in your wp-config.php, .htaccess, or php.ini file:

  • max_execution_time: Set this to at least 300 (seconds).
  • memory_limit: Increase this to 256M or 512M.
  • post_max_size: Ensure this is larger than your migration file.
  • upload_max_filesize: This must also be larger than your backup file.

By giving the server more “room to breathe,” you can often fix WordPress migration stuck or failed issues without needing to change your migration method.

2. Dealing with Large Files and Timeouts

If your website has thousands of images or a massive “uploads” folder, the migration might fail because the zip file is too large for the server to extract at once.

The Solution: Use SFTP for Large Directories

Instead of relying on a plugin to move everything in one go, try a hybrid approach. Use your migration plugin to move only the database and themes. Then, use an SFTP client (like FileZilla) to manually upload the wp-content/uploads folder. Since SFTP uploads files individually and can resume if interrupted, it is a much more stable way to handle large media libraries.

3. Database Incompatibilities and SQL Errors

Sometimes the migration “finishes,” but the site shows a “Critical Error” or a database connection failure. This often happens if the source and destination servers are running different versions of MySQL or MariaDB.

If you encounter an “Internal Server Error” immediately after migrating, check your database prefix in wp-config.php. If your old site used it wp_ but your new auto-installation used it, your site won’t be able to find its content. Aligning these prefixes is a vital step to fix WordPress migration stuck or failed attempts that result in a broken frontend.

4. Resetting Your Permalinks

Is your homepage working, but every other page gives a 404 error? This is a “silent failure” of migration. The .htaccess file, which handles URL routing, often needs to be refreshed on the new server.

  • Log in to your new WordPress dashboard.
  • Go to Settings > Permalinks.
  • Don’t change anything; just scroll to the bottom and click Save Changes.

This simple action regenerates the .htaccess file and fixes the routing, resolving what looks like a failed migration in seconds.

5. Check for Disk Space Issues

It sounds obvious, but many developers forget that a migration requires double the space of the actual site. If your site is 5GB, you need 5GB for the uploaded zip file AND another 5GB for the extracted files. If your hosting account only has 8GB of space, the extraction will stop halfway. Check your hosting dashboard for “Disk Usage” to ensure you aren’t hitting a hard ceiling.

6. Use the “Import via FTP” Feature

Many popular plugins, like All-in-One WP Migration, have a specific “backdoor” for stuck imports. Instead of dragging and dropping the file into the browser (which is prone to network interruptions), upload your .wpress or .dape file directly to the wp-content/ai1wm-backups folder via SFTP. The plugin will then see the file locally on the server, bypassing the unreliable browser upload process and helping you fix WordPress migration stuck or failed errors caused by poor internet connectivity.

Conclusion

A failed migration doesn’t mean your data is gone; it just means the “bridge” between the two servers broke. By increasing PHP limits, manually moving large files via SFTP, and ensuring your database credentials match, you can overcome almost any migration obstacle. If a plugin keeps failing you, remember that the manual method (moving files via SFTP and importing the database via phpMyAdmin) is the most reliable way to ensure a 100% success rate.

Take it one step at a time and monitor your server logs, and you will have your site up and running on its new server before you know it.