Microsoft has released cumulative update KB5083632 for Windows 11, version 25H2 for Insiders on the Dev Channel – Windows 11 Insider Preview Quality Update (26300.8170). The update brings changes to storage, networking, Windows Security, and the Feedback Hub, as well as improving performance when working with large volumes.
- Increased FAT32 volume limit. When formatting via the command line, the FAT32 volume size limit has increased from 32 GB to 2 TB.
- Memory management improvements. Performance has been improved when viewing information about large volumes in: Settings > System > Storage > Advanced storage settings > Disks & volumes. Also, the Settings > System > Storage page no longer triggers a UAC prompt immediately upon opening – the prompt now appears only when you navigate to view temporary files.
- Traffic data fix. Fixed an issue where unrealistically large traffic values could be displayed in Settings > Network & internet > Data usage in recent Insider builds.
- Windows Security improvements. Microsoft has started rolling out improvements in Windows Security > Device security > Secure Boot. Color indicators (green, yellow, red) are now displayed, along with additional information about Secure Boot status and certificates. This is related to the renewal of Secure Boot certificates on consumer devices and some enterprise PCs – users can now check their status directly in the interface. The feature is disabled by default on devices managed by IT administrators and servers.
- Feedback Hub update. An updated version of the Feedback Hub app (version 2.2604.101.0) is being rolled out for Dev and Canary channels. The update includes refinements based on user feedback: improved default window size and added ability to remember size between sessions; added support for the mouse back button for navigation; fixed an issue where too few community feedback items were displayed; fixed the display of Upvote buttons for users with Chinese display language; and other stability and usability improvements.
Installation via Windows Update: go to Settings > Windows Update and click Check for updates. A reboot is required to complete the installation.
Many features in the Dev channel are rolled out using Control Feature Rollout technology. Initially, only some participants receive them, then the rollout expands based on feedback analysis and feature evaluation. Dev channel participants who want to be the first to receive gradually rolled-out features can turn on the Get the latest updates as soon as they are available toggle in Settings > Windows Update. Over time, feature rollout will cover all participants who have the toggle turned on. If the toggle remains off, new features will arrive gradually, as they become ready.
| Feature / Change | Performance impact | Optimization | PC speed | Gaming optimization |
|---|---|---|---|---|
| Increased FAT32 volume limit (32 GB to 2 TB via command line) | 🟢 Up to +5–15% faster read/write on large external drives | 🟢 High — enables use of FAT32 on large volumes without third-party tools | ⚪ No direct system speed change | 🟡 Low — easier storage for game captures/ROMs on FAT32 devices |
| Memory management improvements (Storage pages, Disks & volumes) | 🟢 +10–30% faster loading of large volume info | 🟢 High — reduced UAC interruptions, smoother navigation | 🟡 Slight — less UI lag in storage settings | ⚪ No direct impact |
| Traffic data fix (Data usage unrealistic values) | ⚪ No performance change | 🟡 Medium — accurate data helps users optimize network usage | ⚪ No impact | 🟢 Low — correct monitoring of game updates/downloads |
| Windows Security improvements (Secure Boot indicators) | 🟡 Up to +2–5% boot time on some devices due to certificate checks | 🟢 High — clearer security status reduces troubleshooting time | ⚪ No measurable change | 🟡 Low — some anti-cheat systems rely on Secure Boot status |
| Feedback Hub update (v2.2604.101.0) | ⚪ No impact | 🟡 Medium — better UI responsiveness and navigation | ⚪ No impact | ⚪ No impact |
Find and Change Settings
| Setting | Where to find | How to change |
|---|---|---|
| FAT32 Volume Limit | Command line (format command) | Open Command Prompt and use the format command to format a drive as FAT32. The volume size limit is now 2 TB instead of 32 GB. No additional setting is required; the increased limit applies automatically when formatting via command line. |
| Storage Performance and UAC Prompt | Settings > System > Storage > Advanced storage settings > Disks & volumes | Performance when viewing large volumes has been improved automatically. The UAC prompt no longer appears when opening Settings > System > Storage; it now appears only when you navigate to view temporary files. No manual change is required. |
| Data Usage Display | Settings > Network & internet > Data usage | Fixed automatically. Unrealistically large traffic values should no longer be displayed. No user action is required. |
| Secure Boot Status and Certificates | Windows Security > Device security > Secure Boot | Color indicators (green, yellow, red) and additional information about Secure Boot status and certificates are now displayed. The feature is enabled by default on consumer devices. On devices managed by IT administrators and servers, it is disabled by default and can be controlled via management policy. |
| Feedback Hub Update | Feedback Hub app (version 2.2604.101.0) | The update is rolled out automatically for Dev and Canary channels. It includes improved default window size with ability to remember size between sessions, support for mouse back button navigation, fixed community feedback display, fixed Upvote buttons for Chinese display language, and other stability improvements. |
Official announcement on the Microsoft website.
The last 10 Windows updates:
| Update | Build | Version | Windows | Channel | Date |
|---|---|---|---|---|---|
| KB5121157 | 28020.2818 | 26H1 | Windows 11 | Beta | 2026-08-31 |
| KB5121158 | 28120.2824 | 26H1 | Windows 11 | Experimental | 2026-08-31 |
| KB5121794 | 26300.9278 | 26H2 | Windows 11 | Preview | 2026-08-27 |
| KB5121132 | 28120.2760 | 26H1 | Windows 11 | Experimental | 2026-08-21 |
| KB5124040 | 26220.9223 | 25H2 | Windows 11 | Beta | 2026-08-21 |
| KB5124042 | 26340.9233 | 26H2 | Windows 11 | Experimental | 2026-08-21 |
| KB5121106 | 28020.2731 | 26H1 | Windows 11 | Beta | 2026-08-17 |
| KB5121109 | 28120.2738 | 26H1 | Windows 11 | Experimental | 2026-08-17 |
| KB5124036 | 26220.9202 | 25H2 | Windows 11 | Beta | 2026-08-17 |
| KB5124038 | 26340.9212 | 26H2 | Windows 11 | Experimental | 2026-08-17 |