After Office 2007 and Office 2010, Microsoft released MS Office new version, “Microsoft Office 2013”. Now I am going to share the free serial keys/ free Product keys of Microsoft Office Professional Plus 2013. To install Microsoft Office 2013, First of all Uninstall any of the previous version of MS Office from your computer, then Download and Install Microsoft Office Professional Plus 2013, and use below keys to activate your Office. 

Y89N6-KWWJX-YHFVP-DWMGK-XKR9J
NVWXW-WWVFR-D6HKK-MW2BD-DV2KJ
MT7NR-6GWBK-QGHBV-2YBFG-72V28
JR3N8-YV72J-86V92-HC2PM-PRXTW
6QD6N-J7FQ2-HBMW2-KFJ29-JW728
2MNJP-QY9KX-MKBKM-9VFJ2-CJ9KK
4TBVN-9C666-WQBDD-FM3HX-DYDG

OFFICE 2013 PRO PLUS MSDN RETAIL: 
2MNJP-QY9KX-MKBKM-9VFJ2-CJ9KK
MH2KN-96KYR-GTRD4-KBKP4-Q9JP9

OFFICE 2013 VISIO PRO PLUS MSDN RETAIL: 
K6NC7-KMX7G-TC6RR-FDM23-8K6YQ

OFFICE 2013 PROJECT PRO PLUS MSDN RETAIL: 
2NDRT-M9QTH-2BKP3-HPRVC-J42B9
828CH-G4FPY-HMH4R-32GCK-6D9BH OR
3W3MQ-H7M6X-3WYP7-TPCH6-8G8T2