KB5037864 was not a normal Windows 11 update for everyone. On May 10, 2024, Microsoft released Insider Preview Build 26120.470 to the Windows Insider Dev Channel. Based on the developing Windows 11 24H2 branch, it tested a Game Pass recommendation card in Settings alongside a broad set of system and enterprise fixes. Microsoft warned that Dev Channel features could change, disappear, or never ship publicly.
What KB5037864 actually was
Microsoft identified KB5037864 as Windows 11 Insider Preview Build 26120.470, released on May 10, 2024, for the Dev Channel. The build was based on the Windows 11 version 24H2 development line; it was not evidence that the final 24H2 feature update had reached every Windows 11 PC.
That distinction matters. Stable Windows updates are intended for general production use. Dev Channel builds are experimental development releases that can contain regressions, unfinished work and features that are withdrawn before a public release. Microsoft’s announcement also said that Dev Channel features could be changed, removed or never released outside Insider testing. Microsoft’s Build 26120.470 announcement is the authoritative release note.
| Item | Verified detail |
|---|---|
| Knowledge Base | KB5037864 |
| OS build | 26120.470 |
| Release date | May 10, 2024 |
| Channel | Windows Insider Dev Channel |
| Development base | Windows 11 version 24H2 |
| Known issue | Win + W might not open the Widgets board correctly |
The Game Pass card in Settings
The attention-grabbing change was a Game Pass recommendation card on the Windows 11 Settings homepage. Microsoft did not formally call it an advertisement, although describing it as an in-product subscription promotion or “ad” is understandable: the card promoted a paid Microsoft service inside a system app.
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Who could see it
- The device had to be running a Dev Channel build containing the experience.
- The Settings homepage experience was limited to Windows 11 Home and Pro in Microsoft’s announcement.
- The user had to be signed in with a Microsoft account.
- Microsoft said the card was aimed at people who actively played PC games.
- Availability was controlled through a gradual rollout, so installing the build did not guarantee that the card would appear.
The card promoted Game Pass; it did not grant a free subscription. Catalogs, features and availability vary by region, plan, platform and time. Microsoft’s current PC Game Pass information is available at Xbox’s official PC Game Pass page.
How Microsoft delivered the feature
Insiders could check Settings → Windows Update → Get the latest updates as soon as they’re available. Microsoft used that setting to deliver some features earlier as rollouts expanded. Turning it on did not guarantee the Game Pass card, because edition, account status, gaming activity and staged availability also mattered. Leaving it off did not necessarily block the feature forever; Microsoft could deliver it later when ready.
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Microsoft’s announcement did not document a dedicated switch, policy or registry setting for removing this specific card. Unsupported registry changes are therefore a poor way to pursue an optional preview experience.
What else the build fixed or changed
The Game Pass card was the consumer-facing headline, but KB5037864 also addressed important Windows components. The release notes included:
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Deployment, identity and management
- A suspected fix for installation error
0x8007371Baffecting some Insiders upgrading from the previous Dev build. - A Windows Hello for Business MDM policy named
DisablePostLogonProvisioningfor Entra-joined devices. - A CloudAP deadlock fix affecting simultaneous sign-in and sign-out activity on virtual machines.
- A Group Policy service fix involving
LGPO.exeand audit-policy application. - A Windows Defender Application Control stop-error fix when more than 32 policies were applied.
Remote Desktop and enterprise connectivity
- More flexible Remote Desktop Session Host clipboard redirection, including one-way local-to-remote or remote-to-local configurations.
- A fix for accessing network resources from Remote Desktop sessions when Remote Credential Guard was enabled.
- Changes involving containers, COM+, time service, Secure Launch, AppLocker, TLS 1.3 and DCOM hardening.
Hardware, audio and input
- Improved NPU visibility in Task Manager.
- Bluetooth stability improvements for wireless earbuds with certain firmware versions.
- USB audio fixes affecting some processors after pause, resume or sleep.
- Fixes for Japanese keyboards and Japanese/Chinese IMEs after Modern Standby.
- A Notepad printing fix for certain IPP printers used with print-support apps.
- MSIX localization improvements after upgrading Windows.
- A Settings responsiveness fix when removing Bluetooth devices.
Known issue and the risk of using a Dev build
Build 26120.470 had a documented problem: Win + W might not work correctly when opening Widgets. That issue, combined with Microsoft’s warning about experimental features, is a practical reminder that this was not a production-polished update.
Dev Channel participation can also make recovery or channel changes inconvenient. A feature delivered in this build might be incomplete, altered or abandoned. The build therefore made sense for testers, developers and IT teams validating upcoming Windows behavior—not for a reliability-sensitive primary computer.
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How an Insider could check the build
- Open Settings.
- Select Windows Update.
- On a device enrolled in the Dev Channel, choose Check for updates.
- If offered, review Get the latest updates as soon as they’re available; this is an early-feature delivery option, not a guarantee that the Game Pass card will appear.
- After installation, search Windows for
winverand confirm whether the system reports build 26120.470.
Do not join the Dev Channel solely to see, remove or investigate a subscription recommendation. The channel’s instability trade-off is much larger than the value of this single card.
Who should install KB5037864?
| User | Assessment |
|---|---|
| Windows Insider tester or developer | Reasonable if you accept regressions and want early 24H2 development features. |
| IT professional | Useful on a test device or lab for validating enterprise behavior. |
| Primary work or reliability-sensitive PC | Not recommended; use the stable Windows release instead. |
| User who only wants final Windows 11 24H2 | Do not treat this Dev build as the final public feature update. |
| User interested only in Game Pass | Do not enter the Dev Channel for the promotion; evaluate the subscription separately. |
What the headline gets wrong
- “Microsoft rolled out KB5037864 to Windows 11 users” overstates distribution; Microsoft released it to Windows Insiders in the Dev Channel.
- “Windows 11 24H2 received the update” needs an Insider qualifier because this was a 24H2 development build.
- “Microsoft added ads” is editorial shorthand. Microsoft called the feature a Game Pass recommendation card, while users may reasonably view it as a Microsoft subscription upsell.
- “Everyone saw the card” is incorrect because eligibility and staged rollout conditions applied.
In short, KB5037864 tested a promotional Settings experience while delivering substantial engineering fixes. It did not make Xbox advertising universal across Windows 11, and it did not establish that the same card would become a permanent feature in a later retail release.
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