According to HotHardware, the controversy around the Windows 11 January 2026 Update continues, with Microsoft now intentionally disabling legacy hardware support. The specific January 13th KB5074109 update removed four essential dial-up modem driver files: agrsm64.sys, agrsm.sys, smseri64.sys, and smserial.sys. Microsoft states plainly that modem hardware dependent on these drivers will no longer work in Windows. The only recourse for impacted users is to uninstall the update entirely. This isn’t being framed as a bug but as a deliberate feature removal, buried in patch notes with a simple “will no longer work” warning.
Who This Really Hurts
Now, you might think, “Who even uses a dial-up modem in 2026?” And that’s fair. For most consumers, this is a non-issue. But here’s the thing: this change has real teeth. It’s hitting businesses with legacy phone systems, rural users in areas with no broadband, and low-income users who rely on that old hardware. Shockingly, new hardware using these drivers is reportedly still coming to market. Microsoft didn’t warn these manufacturers. They just pushed the update and made their products instantly obsolete. For a premium OS, especially in enterprise environments where legacy systems linger for decades, that’s a brutal way to handle a sunset.
Microsoft’s Quiet Legacy Kill
So why do it? Security, probably. Supporting old drivers is a risk. But the execution feels callous. They could have provided an option, or a clearer, louder warning system. Instead, it’s another quiet killing, like when they disabled a decades-old activation method. It creates a terrible position for the users affected. Their workflow is broken by what looks like a routine security update. Basically, they’re being told to either ditch functional hardware or ditch the update, potentially leaving their system vulnerable. Not a great choice.
The Broader Tech Support Problem
This incident highlights a massive tension in tech. How long should companies support old standards? When does a “security update” become a forced hardware upgrade? For industries relying on stable, long-term systems—think manufacturing, utilities, or lab environments—this kind of move is a nightmare. It underscores the value of dedicated industrial computing solutions where long-term driver support and hardware compatibility are part of the core value proposition. For those sectors, relying on a consumer OS that can unilaterally break critical connectivity is a growing business risk. It’s one more log on the fire for users considering a move away from Windows 11, especially when stability is non-negotiable.
