id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc,focuses 44787,"Generic ""HTTP Error"" when uploading PDFs via Media area, part II",BearlyDoug,,"In an update/continuation of abandoned (not by me) ticket #43310, I need to bring this issue back to the forefront. After one of my Co-workers and I did some additional testing, we have identified the ""HTTP Error"" is a result of some PHP versions not being able to generate thumbnails from the first page of a PDF (a change that was introduced within the 4.7 release). The issue is that there is no fall-back option when WordPress is unable to generate thumbnails. We loaded the [https://wordpress.org/plugins/disable-pdf-thumbnails/ Disable PDF Thumbnails] plugin on the sites that were returning that ""HTTP Error"" and were able to successfully upload PDFs without any problems. Wordpress should auto-detect PDF image thumbnail creation ""http errors"" and switch to the following fallback upon failure: {{{ function makeworthy_disable_pdf_thumbnails() { $fallbacksizes = array(); return $fallbacksizes; } add_filter('fallback_intermediate_image_sizes', 'makeworthy_disable_pdf_thumbnails'); }}} The other thread (linked above) has some of our system information available, however, I can provide updated details (or FTP/WP-Admin access to the dev that fixes this), as needed.",defect (bug),closed,normal,,Media,4.9.8,normal,duplicate,,,administration