The Final Sunset: Microsoft Kills Windows Server 2008 and Legacy Modem Drivers

This week marked the definitive conclusion of an era as Microsoft formally terminated support for Windows Server 2008, the server-side operating system predicated on the Windows Vista architecture. Originally codenamed Longhorn Server, this venerable OS demonstrated remarkable longevity, persevering for nearly eighteen years.

On January 13, the support window finally closed for clientele who had originally enrolled in Microsoft Premium Assurance—a specialized subscription that extended the delivery of critical security remediations by an additional six years. While the official extended support for Windows Server 2008 technically concluded on January 14, 2020, its operational lifecycle was artificially sustained through a series of extension programs. Initially, Extended Security Updates (ESU) facilitated patches until January 10, 2023, followed by a one-year reprieve granted to Azure-hosted instances until January 9, 2024. However, for those fortified by Premium Assurance, the vanguard of security persisted until this week.

Although the Premium Assurance initiative was long ago shuttered and superseded by the ESU model, Microsoft remained steadfast in its commitment to those who secured coverage during its availability. With the dissemination of this final patch, the entire Windows Vista codebase has reached its ultimate sunset. Vista was released to manufacturers in 2006 and entered the retail market in 2007, with its server counterpart debuting shortly thereafter in 2008. Observers have noted the historical irony that Vista’s maintenance cycle ultimately outlasted that of Windows XP, despite the latter’s significantly greater market ubiquity.

Concurrently, within the January 13 updates for Windows 10, Microsoft has excised several legacy modem drivers—specifically agrsm64.sys, agrsm.sys, smserl64.sys, and smserial.sys. Consequently, hardware based on antiquated Agere chipsets will no longer function within the Windows ecosystem. The corporation justified this removal by citing inherent vulnerabilities within the drivers, asserting that their obsolescence rendered total excision a more prudent course of action than the development of modern patches.