vmware 10 is last for windows xp and vista
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key: NY65G-6238N-PZQ59-1L172-9AT4L
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vmware 12 is last for cpus that don't support EPT (Core 2 and Athlon x2/3/4/Phenom)
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key: CY5HR-A0E94-489UZ-TZZX9-NPH9A
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vmware 14 is last for windows 7 RTM, windows 8.0 and last with Old UI
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key: GU38K-DJW07-488MY-85YXT-P3HU4
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vmware 15 is last for windows 7 SP1, may work on windows 8.0
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key: YY31H-6EYEJ-480VZ-VXXZC-QF2E0
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vmware 16 is last for windows 8.1
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key: CZ300-23YEK-H85GZ-UNW5X-WLKD0
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vmware 17.5 is last for windows server 2012 R2
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key: NZ4RR-FTK5H-H81C1-Q30QH-1V2LA