Still down and so are many mirrors (broken or empty updates) Found one still working at https://fourdots.com/mirror/exim/exim-ftp/pcre/ Or get a copy here http://nginx-win.ecsds.eu/download/pcre-8.40-r1664-10-8-2016-svn-src.zip Both cross-platform sources. Posted at Nginx Forum: https://forum.nginx.org/read.php?2,269359,269423#msg-269423