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Leaked Video Tips (Unlikely) Windows Handheld Mode for Steam Deck

The developer behind the project, which emerged from a hackathon, says Microsoft doesn't have the manpower to build the handheld mode, although the video leak could change that.

 & Michael Kan Principal Reporter

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Is Microsoft working on a new version of Windows for gaming handhelds like the Steam Deck

On Wednesday night, a video circulated on Twitter, showing an apparent “Windows handheld mode” in the works. But according to the project’s developer, Microsoft didn't have enough engineers to follow through on building the software, at least for now. 

Twitter user WalkingCat posted the video of the Windows handheld mode, which originated from a Microsoft hackathon event in September. In the video, an unnamed developer says the project is about creating a “truly optimized Windows experienced for the handheld PC market.”

Technically, you can install Windows 10 or 11 on the Linux-baxed Steam Deck, but don’t expect a great experience. In the leaked video, the developer notes that running games on a Windows-powered Steam Deck can fail due to the OS struggling to interpret the hardware's small screen size or being unable to access the video memory. The other problem is that many Windows user interface elements, including the touch keyboard, were never designed with a handheld in mind. 

In response, the hackathon project envisioned a way to create a Windows handheld mode designed to resolve all the compatibility issues. The video even shows a mockup for an onboarding process to install the necessary drivers to optimize the OS for a PC gaming handheld. 

The onboarding process for Windows handheld modeAnother slide

“So if you look at what it would take to bring handheld mode to the mainstream market...a lot of these things seem feasible,” the developer says in the video. “As long as we have the right specialists, as long as we have the right expertise kind of moving through this project, everything on here is definitely achievable.”

The new Windows mode could also expand the market for PC gaming handhelds. Asus itself plans on launching its own Steam Deck rival, the ROG Ally, which will run on Windows 11.


'We Just Didn't Have the Right Engineers'

But since news of the leaked video began to spread, the lead developer of the project has chimed in on Reddit, and clarified a Windows handheld mode isn’t an official upcoming feature.

“I started this hackathon project and it didn’t go much of anywhere, but this article uses wording to make it seem like it’s something under development,” Reddit user AndrewMT wrote. “Problem is—We just didn’t have the right engineers to do a lot of what we wanted to do in the short hackathon project timeframe.”

However, AndrewMT is hopeful the leaked video of his hackathon presentation will spark Microsoft to revisit the project. “Maybe this odd article can help me pitch this to Microsoft again. Phil Spencer (the head of Xbox gaming) was very nice and tried to drive me to some people that could help, but everyone was tied-up at the time,” he wrote in his post on Reddit. 

Another slide from the presentation.

AndrewMT, who's name is Andrew Thompson, tells PCMag he’s “a product designer for another, non-gaming product at Microsoft.” He says the company's hackathon was only one week long, "so many people that could have helped (Phil Spencer was kind enough to connect me with a few of then) were tied-up at the time."

"I believe that I could get the discussion going again if there was enough excitement, and the tweet/article is certainly helping with that," he added. "Also helping is the continued success of the Steam Deck and the fact that we are seeing other Windows-driven handhelds starting to enter the market."

About Our Expert

Michael Kan

Michael Kan

Principal Reporter

My Experience

I've been a journalist for over 15 years. I got my start as a schools and cities reporter in Kansas City and joined PCMag in 2017, where I cover satellite internet services, cybersecurity, PC hardware, and more. I'm currently based in San Francisco, but previously spent over five years in China, covering the country's technology sector.

Since 2020, I've covered the launch and explosive growth of SpaceX's Starlink satellite internet service, writing 600+ stories on availability and feature launches, but also the regulatory battles over the expansion of satellite constellations, fights with rival providers like AST SpaceMobile and Amazon, and the effort to expand into satellite-based mobile service. I've combed through FCC filings for the latest news and driven to remote corners of California to test Starlink's cellular service.

I also cover cyber threats, from ransomware gangs to the emergence of AI-based malware. In 2024 and 2025, the FTC forced Avast to pay consumers $16.5 million for secretly harvesting and selling their personal information to third-party clients, as revealed in my joint investigation with Motherboard.

I also cover the PC graphics card market. Pandemic-era shortages led me to camp out in front of a Best Buy to get an RTX 3000. I'm now following how the AI-driven memory shortage is impacting the entire consumer electronics market. I'm always eager to learn more, so please jump in the comments with feedback and send me tips.

The Best Tech I've Had:

  • My first video game console: a Nintendo Famicom
  • I loved my Sega Saturn despite PlayStation's popularity.
  • The iPod Video I received as a gift in college
  • Xbox 360 FTW
  • The Galaxy Nexus was the first smartphone I was proud to own.
  • The PC desktop I built in 2013, which still works to this day.

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