Nearly 43 percent of millions of devices studied by asset management provider Lansweeper are unable to upgrade to Windows 11 due to the hardware requirements Microsoft set out for the operating system. The Register reports: Lansweeper said 42.76 percent of the estimated 27 million PCs it tested across 60,000 organizations failed the CPU test, albeit better than the 57.26 percent in its last test a year ago. Altogether 71.5 percent of the PCs failed the RAM test and 14.66 percent the TPM test. "We know that those who can't update to Windows 11... will continue to use Windows 10," said Roel Decneut, chief strategy officer at Lansweeper, whose customers include Sony, Pepsico, Cerner, MiT and Hilton hotels. He said that even if enterprises are prepared to upgrade their PC fleet to meet the system requirements of Microsoft's latest OS, there are "broader issues affecting adoption that are out of Microsoft's control." "Global supply chain disruption has created chip a processor shortage, while many are choosing to stick with what hardware they have at the moment due to the global financial uncertainty." Other findings from Lansweeper show adoption rates for the latest OS are improving, running on 1.44 percent of computers versus 0.52 percent in January. This means the latest incarnation has overtaken Windows 8 in the popularity stakes but remains behind market share for Windows 7, despite that software going end of life in January 2020. Adoption is, unsurprisingly, higher in the consumer space. Some 4.82 percent of the biz devices researched were running an OS that wasn't fully supported and 0.91 percent had servers in their estate that are end of life.

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An anonymous reader quotes a report from Ars Technica: It's still possible to learn a lot of interesting things about old operating systems. Sometimes, those things are already documented (on a blog post) that miraculously still exist. One such quirk showed up recently when someone noticed how Microsoft made sure that SimCity and other popular apps worked on Windows 95. A recent tweet by @Kalyoshika highlights an excerpt from a blog post by Fog Creek Software co-founder, Stack Overflow co-creator, and longtime software blogger Joel Spolsky. The larger post is about chicken-and-egg OS/software appeal and demand. The part that caught the eye of a Hardcore Gaming 101 podcast co-host is how the Windows 3.1 version of SimCity worked on the Windows 95 system. Windows 95 merged MS-DOS and Windows apps, upgraded APIs from 16 to 32-bit, and was hyper-marketed. A popular app like SimCity, which sold more than 5 million copies, needed to work without a hitch. Spolsky's post summarizes how SimCity became Windows 95-ready, as he heard it, without input from Maxis or user workarounds: "Jon Ross, who wrote the original version of SimCity for Windows 3.x, told me that he accidentally left a bug in SimCity where he read memory that he had just freed. Yep. It worked fine on Windows 3.x, because the memory never went anywhere. Here's the amazing part: On beta versions of Windows 95, SimCity wasn't working in testing. Microsoft tracked down the bug and added specific code to Windows 95 that looks for SimCity. If it finds SimCity running, it runs the memory allocator in a special mode that doesn't free memory right away. That's the kind of obsession with backward compatibility that made people willing to upgrade to Windows 95." Spolsky (in 2000) considers this a credit to Microsoft and an example of how to break the chicken-and-egg problem: "provide a backwards compatibility mode which either delivers a truckload of chickens, or a truckload of eggs, depending on how you look at it, and sit back and rake in the bucks." Windows developers may have deserved some sit-back time, seeing the extent of the tweaks they often have to make for individual games and apps in Windows 95. Further in @Kalyoshika's replies, you can find another example, pulled from the Compatibility Administrator in Windows' Assessment and Deployment Kit (ADK). A screenshot from @code_and_beer shows how Windows NT, upon detecting files typically installed with Final Fantasy VII, will implement a fittingly titled compatibility fix: "Win95VersionLie." Simply telling the game that it's on Windows 95 seems to fix a major issue with its operation, along with a few other emulation and virtualization tweaks. "Mike Perry, former creative director at Sim empire Maxis (and later EA), noted later that there was, technically, a 32-bit Windows 95 version of Sim City available, as shown by the 'Deluxe Edition' bundle of the game," adds Ars. "He also states that Ross worked for Microsoft after leaving Maxis, which would further explain why Microsoft was so keen to ensure people could keep building parks in the perfect grid position to improve resident happiness."

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