zLib keeps its Visual Studio project files under 'contrib/vstudio/vc11'. Upgrade the project files to VS 2013. Build all four configurations and copy the dll, lib, and pdb file to the root of the zlib source directory so that libcurl can find it later. 2.3.2 Installation from source. Installation from source on Windows is recommended for experienced Windows programmers only. The procedure below was tested on a 64 bit Windows 7 SP1 system using Visual Studio 2012 Express for Desktop. A Perl interpreter is required, you can use either Strawberry Perl 〈1〉 or ActivePerl 〈2〉. The programs on your system will then be compiled either for the 32-bit (i386, x86) arch, or the 64-bit (amd64, x86_64) arch. If you've forgotten which one you have, you can check by running the command uname -m in a terminal. A result of x86_64 and i686 would indicate a 64-bit or a 32-bit system respectively. zlib1.dll is associated with the zlib data compression library and the program zlib. zlib1.dll errors are most commonly caused when two programs share the same .dll file. When a program is deleted sometimes it will delete the .dll file associated with both programs. Errors can also occur from a faulty zlib1.dll file or incorrect versions of the ... Visit League of Legends site and Download League of Legends Latest Version! Why Download League of Legends using YepDownload? League of Legends Simple & Fast Download! Works with All Windows (64/32 bit) versions! League of Legends Latest Version! Fully compatible with Windows 10; Disclaimer League of Legends is a product developed by Riot Games.