Microsoft ShopAll Microsoft Products License Key In One Place Filters Reset all × Office MAK × Windows 8.1 × Enterprise E5 × Professional × 12 Months × Lifetime / Reusable × CategoriesN/A See more See less Product VersionN/A See more See less Product EditionN/A See more See less License Term Lifetime / Onetime (2) License TypeN/A Platform SupportedN/A Users SupportedN/A Devices SupportedN/A Show (0) Cancel Filtered (0) Reset all × Office MAK × Windows 8.1 × Enterprise E5 × Professional × 12 Months × Lifetime / Reusable ×