Task Manager Archives

Winsage

May 2, 2026

New Windows Insider Experience Starts Rolling Out to Some Canary Testers

Microsoft's Windows Insider program has transitioned Dev Channel testers to the new Experimental Channel and is expanding this initiative to include Canary testers on the 28000 series builds, who will also move to the Experimental (26H1) Channel. The new Windows Insider experience introduces feature flags in Windows Update settings, allowing testers to toggle features on and off. Microsoft plans to roll out new features through Controlled Feature Rollouts (CFRs) and has stopped gradual feature rollouts on the updated Beta Channel. Recently, Microsoft released four new builds available via downloadable ISOs. Canary testers on 29500 series builds will soon transition to the "Experimental (Future Platforms)" Channel and can currently download build 29580.1000, which includes a revamped Feedback Hub with a 500 MB file upload limit and design improvements. For Canary testers on the 28000 series, the transition to the "Experimental (26H1) Channel" follows the installation of build 28020.1921, which enhances the Task Manager app. Insiders who moved from the Dev Channel to the Experimental Channel can download build 26300.8346, featuring improvements such as a Widgets board that remains closed by default, a redesigned Run dialog, promotional app recommendations in Windows Share for Microsoft Entra account users, sharper file thumbnails in File Explorer, and enhanced Windows Magnifier functionality. The Beta Channel build 26220.8340 includes similar Windows Share improvements and minor UI enhancements for Task Scheduler. The Beta Channel is set to transition to a new experience that will eliminate Controlled Feature Rollouts.

Winsage

May 1, 2026

Microsoft CEO wants to win back lost Windows fans

Satya Nadella, CEO of Microsoft, announced the company's renewed focus on improving user engagement with Windows and its consumer offerings during the third quarter of fiscal year 2026. Microsoft is addressing issues in Windows 11 by enhancing speed and reducing bugs, with key objectives including improving performance on devices with lower RAM, simplifying the update interface, and focusing on core features. Notable updates include options to postpone or skip system updates, the removal of unnecessary applications like Copilot, and enhancements such as displaying NPU activity in Task Manager and a built-in Internet speed test. Microsoft is also transitioning to native frameworks like WinUI 3, redesigning the Start menu to function directly at the system level, which is expected to reduce RAM consumption and improve performance stability on lower-resource devices.

Tech Optimizer

April 26, 2026

Fix: You’ll need a new app to open this windowsdefender link

The message “You’ll need a new app to open this windowsdefender link” indicates issues with the Windows operating system when the Windows Security app fails to launch via the windowsdefender protocol. This can prevent users from accessing the security dashboard, despite Microsoft Defender continuing to operate in the background. Common scenarios leading to this error include clicking on Virus & Threat Protection, trying to open Windows Security from the Start menu, interacting with a Defender notification, or following the uninstallation of third-party antivirus software. Root causes may include corrupted Windows Security app registration, damaged system files, third-party antivirus interference, misconfiguration of the Security Center service, or malware interference. To resolve the issue, users can verify that required services are running, repair system files using SFC and DISM, re-register the Windows Security app, check for third-party antivirus conflicts, and perform a repair installation of Windows. Specific steps include checking the status of the Security Center and Microsoft Defender Antivirus Service, executing repair commands in CMD, re-registering the Windows Security app using PowerShell, uninstalling third-party antivirus software, and performing an in-place upgrade if necessary.

Winsage

April 25, 2026

Microsoft Starts Rolling Out New “Experimental” Windows Insider Channel

Microsoft is rolling out a new Experimental Windows Insider channel, transitioning users from the Dev Channel to the Experimental Channel with updates from the 26300 series builds. Over the coming weeks, Canary testers using the 28000 series will be moved to the Experimental (26H1) Channel, while those on the 29500 series will go to the Experimental (Future Platforms) Channel. The latest build for the Dev Channel is 26300.8289, which includes enhancements such as improved Windows Update functionalities and options to skip updates during the out-of-the-box experience. Dev Channel testers can enable the Experimental Channel option through Settings. The Experimental Channel will allow switching between 26H1 builds and future platform builds. Canary Channel testers have access to build 28200.1873, which rebrands the Xbox full-screen experience and improves the Touch Keyboard. Additionally, build 29576.1000 is available for testers on the 29500 series, featuring a redesigned volume slider and new metrics in Task Manager. Beta Channel Insiders can download build 26200.8283, which includes minor adjustments to the Start Menu and print drivers, but the new Beta experience will not be immediately available.

Winsage

April 22, 2026

I just found out the creator of Windows Task Manager accidentally left his phone number inside the app

Dave Plummer, the creator of the original Task Manager at Microsoft in the 1990s, encountered an issue where CPU utilization readings occasionally exceeded 100%, which he suspected was a bug in the kernel. Despite being a user interface designer and facing skepticism from the kernel team, he implemented 'asserts' in the code to diagnose the problem. One assertion specified that CPU usage should not exceed 100%, and he embedded his name and home phone number in the code for anyone who might encounter the issue. No one ever contacted him about the bug, and it remained unresolved until the kernel developers identified and fixed it later.

Winsage

April 22, 2026

‘A performance tool that requires a graduate seminar before breakfast has already lost the room’: Why Windows Task Manager looks like it’s getting CPU usage wrong

Users have expressed frustration with Windows 11's Task Manager CPU usage reporting, believing it relies only on base clock speeds. Dave Plummer, the original architect of Task Manager, indicated that discrepancies may arise from average calculations and inherent compromises in the metrics. In response, Microsoft announced a fix in a recent Preview build, stating that Task Manager will now use standard metrics for CPU utilization across all pages to align with industry standards. Plummer also suggested a distinct Windows mode for power users to enhance flexibility.

Winsage

April 20, 2026

Original Task Manager creator explains why it lies to you about CPU usage — former Microsoft engineer shows unique solution to a seemingly simple, but actually complicated, task

Dave Plummer, a former Microsoft engineer and architect of the original Task Manager, explained the complexities of measuring CPU usage. He noted that the process is not as simple as it seems, as CPU activity can vary across different cores and the timing of measurements can influence results. The Task Manager accounts for various states of CPU activity, including user mode, kernel mode, interrupt time, deferred procedure calls, and idle loops, making the measurement of CPU utilization a complex task rather than a straightforward one.

Winsage

April 16, 2026

Microsoft’s VP just reworked a Windows 11 feature to make it “comfortable” for macOS users — if they ever decide to switch

Microsoft, Apple, and various Linux distributions compete for user loyalty in the operating system market, with Microsoft leading through its Windows OS. PeekDesktop is a free utility developed by Scott Hanselman, allowing Windows users to hide open windows by clicking on the desktop, similar to a feature in macOS Sonoma. Early testing revealed issues, such as interference with emptying the Recycle Bin and the Task Manager not responding to clicks on the wallpaper. Hanselman noted that PeekDesktop was inspired by macOS features, aiming to help Apple users transition to Windows.

Winsage

April 14, 2026

Microsoft’s VP brings macOS-style click to reveal desktop feature to Windows with new tool

Scott Hanselman, VP at Microsoft, has introduced a tool called PeekDesktop for Windows, which allows users to minimize all open windows by clicking on an empty area of their desktop wallpaper. A second click or switching back to any application restores the windows to their original positions. This feature is similar to the "click wallpaper to reveal desktop" function in macOS Sonoma, which has not been available in Windows until now. PeekDesktop is easy to install from GitHub, requires no additional setup, and is compatible with Windows on ARM. It uses minimal system resources and operates through lightweight Windows APIs to manage window states. Users can customize settings from the system tray, and Hanselman is working on enhancements to replicate more macOS-style behaviors.

Winsage

April 13, 2026

The engineer who built Windows Task Manager in the 90s says its 80KB footprint was a feature not an accident

David Plummer, a veteran Microsoft engineer, created the original Windows Task Manager (Taskmgr.exe) in the 1990s, which had a file size of only 80KB. This small size was crucial for its functionality during system freezes. Plummer used a mutex to check if another instance of the program was running, allowing for efficient operation without complex process lists or loops. His recent reflections in early 2026 have sparked discussions about the evolution of software, particularly criticizing Windows 11 for straying from its foundational purpose and emphasizing resource efficiency. The 1990s hardware constraints forced developers to innovate, contrasting with today's environment where abundant resources allow for less efficient applications. Plummer's mutex technique is now seen as a benchmark in application design, highlighting a generational shift in development practices. The discourse around his 80KB Task Manager raises questions about the future of software procurement and the importance of memory footprint in purchasing decisions.