Images Not Displaying On Page or Media Gallery After Multisite Migration

Question

I recently migrated a WP Multisite (600+ subsites). All of the images are in the correct folders, but just get broken images, file not found, etc. I have tried:

• Regenerating Thumbnails via plugin and WP-CLI
• Resetting Permalinks
• File Permissions

I am at a total loss for ideas.

Answer 1

Use https://developer.mozilla.org/en-US/docs/Learn/Common_questions/Tools_and_setup/What_are_browser_developer_tools to determine:

Are the URLs absolute or relative as seen in browser source?

Is the path correct for the images that throw the 404's?

If you changed domains, take a look at https://wordpress.stackexchange.com/search?q=CLI+change+domains

Answer 2

Figured out the WP install on the new host didn't update the .htaccess file to include the upload path

RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L]