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⚠️ Mainstream support ended in 2018, and extended support ended in January 2023. Use this OS only on offline machines or those with a specific security plan. FULL Windows 8.1 AIO Update 3 x86 x64 pt-BR
This identifies the core operating system. Windows 8.1 was released in 2013 as an update to Windows 8, aiming to address user complaints regarding the user interface (specifically bringing back the Start button) and adding various functional improvements. : ⚠️ Mainstream support ended in 2018, and