Windows 11 memory usage is a bigger problem than most users realise — and now Microsoft has said so publicly. The company has acknowledged that its own built-in applications consume far more RAM than they should, directly hurting system responsiveness even on machines with 16 GB of memory or more. A fix centred on the WinUI 3 framework is in progress, but the details matter. Here is a clear breakdown of what is happening, which apps are the worst offenders, and what the incoming patch can realistically be expected to deliver.
Why Microsoft’s Admission on Windows 11 RAM Usage Is a Big Deal
It is rare for Microsoft to publicly concede that a core aspect of its operating system is poorly optimised. Yet that is precisely what happened in mid-2026, when the company confirmed it has been working on changes to WinUI — the UI framework that powers most modern built-in Windows 11 applications — specifically to reduce its memory footprint. According to Windows Latest’s reporting, Microsoft stressed that the memory improvements must land before it proceeds with a broader UI rewrite — including a planned Start Menu overhaul. In other words, the RAM problem is now a blocking issue for future Windows 11 development, not a side project.
That context elevates this beyond a routine performance complaint. When Microsoft puts memory optimisation on the critical path for its flagship OS roadmap, it signals that the situation is serious enough to delay other work. For everyday users experiencing sluggishness on otherwise capable hardware, that validation is long overdue.
Which Built-In Apps Drive the Worst Windows 11 RAM Consumption
The culprits are the modern, WinUI-based inbox applications that ship with every copy of Windows 11. These apps were rebuilt using Microsoft’s newer UI toolkit, which — while visually polished — carries a heavyweight rendering engine that loads significant resources even when an app is merely sitting in the background.
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Microsoft Teams (personal/chat widget): The integrated Teams experience that auto-starts with Windows 11 has been one of the most consistently cited memory offenders, routinely consuming several hundred megabytes at idle.
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Widgets panel: The Widgets service runs persistent background processes that fetch news, weather, and finance data continuously, adding to overall Windows 11 RAM usage even when the panel is closed.
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Microsoft Photos: Rebuilt on WinUI 3, Photos loads a heavier runtime than its Windows 10 predecessor despite offering a largely similar feature set to most users.
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Settings app: The relaunched Settings application — a WinUI shell — keeps portions of itself resident in memory after you close it, a behaviour tied directly to the framework’s initialisation overhead.
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Cortana / Search indexer: Although Cortana’s profile has shrunk, background search indexing and the Search highlights feature maintain a persistent RAM presence that can spike under load.
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Xbox app and Game Bar: Game-related services auto-launch on non-gaming machines and contribute to idle memory pressure, particularly on systems with 8 GB of RAM.
The common thread across all these apps is WinUI 3 itself. The framework initialises a rendering stack — DirectComposition, XAML islands, and associated services — regardless of how lightweight the app’s actual workload is. That overhead is the root problem Microsoft has now committed to addressing.
What the WinUI 3 Performance Fix Actually Promises
Microsoft’s stated approach is to reduce the per-process memory cost of the WinUI 3 runtime. The key changes being worked on include deferred initialisation (loading rendering components only when an app is actually brought into view rather than at process start), better resource sharing between WinUI processes, and tighter controls over background service lifetimes for inbox apps.
According to PCWorld’s coverage of the story, Microsoft plans a WinUI 3 overhaul specifically before it begins rebuilding major UI surfaces such as the Start Menu. That sequencing is deliberate: a Start Menu written in the current WinUI 3 framework would be catastrophically expensive in RAM terms, so the framework must be leaner first.
What this means practically for users:
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Idle RAM consumption from built-in apps should fall noticeably once the updated WinUI runtime rolls out through Windows Update.
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App launch times may improve because less of the rendering stack will be pre-loaded at startup.
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Systems with 8 GB of RAM — the official minimum for Windows 11 — should see the biggest gains, since they are most constrained by the current overhead.
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The fix is framework-level, meaning it will benefit all WinUI apps simultaneously rather than requiring individual updates to each application.
However, it is worth tempering expectations. A framework-level memory improvement rarely produces overnight miracles. The optimisations will roll out incrementally, and some apps may require their own updates to take full advantage of the leaner runtime.
How to Reduce Windows 11 RAM Usage Right Now
You do not have to wait for Microsoft’s patch to reclaim memory. Several practical steps can meaningfully reduce Windows 11 memory usage today.
Disable Auto-Starting Apps
Open Task Manager (Ctrl + Shift + Esc), navigate to the Startup apps tab, and disable anything you do not need at boot. Teams personal, Xbox app, and the Widgets service are safe to disable for most users and deliver immediate relief.
Turn Off the Widgets Panel
Right-click the taskbar, select Taskbar settings, and toggle Widgets off. This kills the background data-fetching service and typically frees 150–300 MB of RAM, depending on your system.
Adjust Virtual Memory Settings
If you are on 8 GB of RAM, ensure Windows 11 is managing your page file automatically. Go to System > Advanced system settings > Performance > Advanced > Virtual memory and select “Automatically manage paging file size for all drives.” This gives the OS more headroom when physical RAM is tight.
Uninstall Unused Inbox Apps
Windows 11 allows you to uninstall most built-in apps via Settings > Apps. Removing applications you genuinely never use — such as the Maps app, Solitaire Collection, or the Xbox app on non-gaming machines — eliminates their background processes entirely, which is more effective than simply closing them.
Keep Windows 11 Fully Updated
Microsoft is already shipping incremental memory improvements ahead of the full WinUI overhaul. Staying current via Windows Update ensures you receive these as they land. The May 2026 cumulative update (KB5089549) included memory management refinements as part of its broader patch package — staying up to date is the easiest optimisation of all.
Does Windows 11 Memory Usage Affect Whether You Should Upgrade?
If you are still on Windows 10 and weighing an upgrade, this issue deserves honest consideration. Windows 11 does carry a meaningfully higher idle RAM baseline than Windows 10, largely because of the WinUI-based app ecosystem. On machines with 16 GB or more, the difference is rarely felt in practice. On 8 GB systems, particularly those used for productivity tasks that also have a browser open, the overhead can translate into real sluggishness.
That said, Windows 10 reaches end of life in October 2025, meaning it will no longer receive security patches — a far more significant risk than slightly elevated RAM usage. The correct response is not to avoid Windows 11 but to ensure your hardware is genuinely ready for it, and to apply the practical optimisations above while Microsoft’s framework fix matures.
If you need a clean, fully activated copy of Windows 11 at a fair price, Buy Now Key offers Microsoft Windows 11 Pro – Retail with lifetime activation from €17.90, or the more affordable Microsoft Windows 11 Home – OEM from €9.65 — both delivering instant digital delivery and full activation support.
What to Watch For in Upcoming Windows 11 Memory Fix Updates
Microsoft has not published a single release date for the WinUI 3 memory improvements — the changes are being rolled out progressively through Windows Update and preview builds in the Windows Insider Programme. Users who want to track progress should watch for Insider builds that mention “WinUI performance,” “memory management,” or “reduced app resource usage” in their changelogs. The full Start Menu rebuild — which follows the memory work — will itself serve as a signal that the framework optimisation phase is substantially complete.
In the meantime, the Windows 11 KB5089549 update breakdown on this blog covers what Microsoft has already shipped in recent cumulative updates, giving you a clear picture of how performance work is progressing right now.
Frequently Asked Questions
Why does Windows 11 use so much RAM compared to Windows 10?
Windows 11 rebuilt many of its core inbox applications using the WinUI 3 framework, which carries a heavier rendering stack than the older Win32 apps it replaced. This framework loads DirectComposition and XAML services even for relatively lightweight applications, driving up baseline Windows 11 RAM usage. Microsoft has acknowledged this overhead and is actively working to reduce the WinUI 3 per-process memory cost.
Which Windows 11 apps use the most memory?
The biggest consumers of Windows 11 RAM at idle are typically Teams (personal integration), the Widgets panel, Microsoft Photos, and the Settings application — all of which are built on WinUI 3. Background services tied to the Xbox app and Cortana also contribute. Disabling auto-start for these apps is the fastest way to cut idle RAM consumption.
Will Microsoft’s WinUI 3 fix automatically apply to my PC?
Yes. Because the fix targets the WinUI 3 runtime itself rather than individual applications, it will be delivered as part of cumulative Windows Updates. You do not need to reinstall Windows or sideload anything — keeping Windows Update enabled is sufficient. Some benefits may also arrive through Microsoft Store updates to individual inbox apps.
Is 8 GB of RAM still enough for Windows 11?
8 GB meets the official Windows 11 system requirements and works adequately for light use. However, with current WinUI overhead, multitasking on an 8 GB system — especially alongside a browser with multiple tabs open — can feel constrained. Microsoft’s memory fix should meaningfully improve the experience, but 16 GB remains the practical sweet spot for comfortable day-to-day use in 2026.
Can I disable built-in Windows 11 apps to save RAM?
Yes, most inbox apps that you do not use can be uninstalled via Settings > Apps, or disabled from auto-starting via Task Manager’s Startup apps tab. Removing unused WinUI apps eliminates their background processes entirely, which is more effective than simply closing them. Apps like Maps, Solitaire, and the Xbox app are safe to remove on non-gaming machines.