Step by Step installing Exchange sevrer 2013 on Win 2008 R2 Server
Prerequisites
1. dotNetFx45_Full_setup
2. WMI and WINRM (Windows6.1-KB2506143-x64)
3. UcmaRuntimeSetup
4. FilterPack64bit.exe
5.filterpack2010sp1-kb2460041-x64-fullfile-en-us.exe (Service pack 1)
6. Windows Identity Foundation (Windows6.1-KB974405-x64.msu)
7. 437879_intl_x64_zip (A HotFIX)
8. Windows6.1-KB2533623-x64.msu
Above Items can be download from Google just copy and find
Net frame work 4.5 RC is Installing and follow the Wizard
AmaanTech 