What causes the "The link you follow has expired" error? When trying to upload a WordPress theme or plugin that is larger than the file size limit set by the server on which WordPress is running, it is common to get the "The link you follow has expired" error. The message is as follows: Web hosting companies can control the size of files that can be uploaded to WordPress to improve the overall performance of the web server. It may be found that large files may cause the site to become unstable or slow. This can be done by visiting the W...