Ought to You Set up This Preview Replace?

Home windows 11 KB5074105 is value testing solely when you might have a selected purpose. Microsoft launched it on January 29, 2026 as an optionally available, non-security preview cumulative replace for Home windows 11 24H2 and 25H2. It brings probably the most significant adjustments to Home windows MIDI Providers and Cross-Machine Resume, plus an extended listing of fixes, however it could have an effect on specialised drivers and—on some 24H2 techniques—Safe Boot and the Boot Supervisor. For extraordinary customers, ready for the later manufacturing launch is the lower-risk selection.

Brief reply: Home windows 11 KB5074105 is an optionally available, non-security preview cumulative replace launched on January 29, 2026. It applies to Home windows 11 model 24H2 and 25H2, producing OS builds 26100.7705 and 26200.7705 respectively. Most individuals ought to await the traditional manufacturing replace until they want one in all its listed fixes or wish to validate the brand new Home windows MIDI Providers habits. Directors, builders, and musicians can set up it safely—however solely in a managed take a look at, with present backups and a restoration path.

Microsoft says it isn’t presently conscious of any recognized points with KB5074105. That’s Microsoft’s documented known-issues place, not a assure that each third-party driver, MIDI gadget, utility, or customized Home windows configuration will work appropriately. The separate Microsoft engineering documentation for Home windows MIDI Providers describes compatibility issues affecting a number of driver and gadget mixtures, so MIDI customers ought to take a look at extra fastidiously than extraordinary desktop customers. See Microsoft’s KB5074105 launch notes and the Home windows release-cycle steering earlier than deploying it broadly.

KB5074105 at a look

Merchandise	Particulars
Launch date	January 29, 2026
Replace kind	Non-obligatory, non-security preview cumulative replace
Supported Home windows variations	Home windows 11 24H2 and 25H2
Ensuing builds	24H2: 26100.7705; 25H2: 26200.7705
Bundle architectures	x64 and Arm64 packages are listed within the Microsoft Replace Catalog
Finest purpose to put in	You want a selected repair, want the brand new MIDI performance, or are validating the following manufacturing launch
Finest purpose to attend	Your pc is business-critical, used for reside efficiency or manufacturing, or has no examined restoration route

Preview updates are usually supplied throughout the fourth week of the month so organizations can validate non-security adjustments earlier than the next month’s common safety launch. Skipping KB5074105 doesn’t imply skipping the following safety replace; its non-security enhancements are usually integrated right into a later manufacturing cumulative replace.

What KB5074105 adjustments

Home windows MIDI Providers is the key characteristic change

KB5074105 provides or improves Home windows MIDI Providers help for each MIDI 1.0 and MIDI 2.0. The replace consists of WinMM and WinRT MIDI 1.0 help, built-in MIDI translation, shared MIDI ports throughout functions, customized port names, loopback, app-to-app MIDI connections, efficiency enhancements, and bug fixes.

For musicians, studios, and MIDI software program builders, this is usually a significant enchancment. Functions could possibly share ports extra cleanly, talk via digital or loopback paths, and use newer MIDI capabilities with out relying completely on separate vendor-specific parts.

Don’t confuse the Home windows replace with the separate Home windows MIDI Providers App SDK and instruments package deal. That package deal is a separate obtain. Microsoft’s documentation additionally notes that the listed SDK and instruments releases had been unsigned on the time of documentation and will show a safety warning. Set up it solely once you perceive why you want the developer instruments and have verified the obtain supply.

MIDI compatibility dangers deserve separate testing

The Home windows MIDI engineering workforce has documented points involving some inMusic-branded drivers, dynamic digital MIDI ports corresponding to loopMIDI and rtpMIDI, older Hercules controllers that use DirectMusic drivers, Korg USB drivers, and sure Bluetooth Low Vitality MIDI configurations. The engineering steering consists of workarounds and staged fixes, and applies to the Home windows MIDI Providers rollout on retail Home windows 11 24H2, 25H2, and 26H1.

These engineering-documented MIDI compatibility points should not the identical as a recognized problem listed towards KB5074105 itself. Microsoft’s KB web page presently says that it isn’t conscious of any points with the replace. The sensible conclusion is narrower: don’t assume that “no recognized points” implies that each explicit MIDI driver stack has been validated. Test the Home windows MIDI Providers recognized points and workarounds web page, replace producer drivers the place acceptable, and take a look at the precise tools and software program you employ.

Cross-Machine Resume expands Android-to-PC continuity

The replace expands Cross-Machine Resume so supported Android telephones can proceed actions on a Home windows PC. Microsoft provides examples corresponding to resuming Spotify playback, persevering with work in Phrase, Excel, or PowerPoint, and persevering with a looking session.

The discharge notes additionally listing Vivo Browser help and Microsoft Copilot-related file continuation for Android telephones from HONOR, OPPO, Samsung, vivo, or Xiaomi. Availability will depend on the acknowledged apps, cellphone help, online-file limitations, and the remainder of Microsoft’s Cross-Machine Resume necessities. Deal with this as an ecosystem characteristic with gadget and utility {qualifications}—not as a assure that each Android cellphone or each cellular app can resume on Home windows.

Good App Management wording modified after launch

The unique launch documentation recorded a Good App Management change that might let customers flip Good App Management on or off via Home windows Safety > App & browser management > Good App Management settings, with out a clean-install requirement.

Microsoft later eliminated that characteristic from the KB5074105 documentation and indicated that it was deliberate for a future launch. Due to this fact, don’t set up KB5074105 solely since you anticipate this Good App Management habits. If the setting is absent in your pc, that’s in keeping with the revised documentation; its presence or absence shouldn’t be handled as proof that the replace put in incorrectly.

Storage settings can request elevation

After the replace, opening Settings > System > Storage might produce a Consumer Account Management immediate. Microsoft says the change is meant to assist be certain that solely licensed Home windows customers can entry system information.

It is a habits change, not routinely a failure or safety defect. When you intentionally opened Storage settings and belief the motion, approve the immediate with a certified account. If a immediate seems unexpectedly, cancel it and examine reasonably than approving it blindly.

Safe Boot and Boot Supervisor adjustments on some 24H2 techniques

On Home windows 11 model 24H2 gadgets that have already got the Home windows UEFI CA 2023 certificates within the Safe Boot signature database, the replace can replace the Boot Supervisor. Microsoft says it replaces the 2011-signed bootmgfw.efi with a 2023-signed model.

The necessary operational warning is that resetting the Safe Boot database, or switching Safe Boot on or off, may cause a Safe Boot violation on affected techniques. Don’t change these firmware settings casually whereas testing the replace. If a Safe Boot violation prevents Home windows from beginning, use ready restoration media and Microsoft’s restoration directions reasonably than repeatedly altering firmware settings.

Different fixes and enhancements

The KB lists extra fixes throughout the shell, activation, storage, virtualization, accessibility, graphics, and boot processes. The documented areas embody:

• Improved lock-screen responsiveness.
• Higher File Explorer responsiveness when working with community areas.
• A repair for File Explorer hangs throughout the first sign-in.
• License migration and activation enhancements.
• A repair for desktop icons shifting unexpectedly.
• Corrected keyboard repeat-delay labels that had been reversed.
• A repair for elevated Home windows Terminal hangs when launched from a non-administrator account.
• A Home windows Sandbox startup repair for error 0x800705b4.
• A repair for black screens in remoted multiuser environments.
• A repair for some GPU-related dxgmms2.sys failures.
• iSCSI boot enhancements.
• Narrator enhancements throughout ISO set up.
• A repair for Home windows Boot Supervisor debugging startup hangs.

These fixes can justify a managed pilot after they handle an issue you even have. They aren’t a purpose to replace a manufacturing pc blindly: a repair that’s priceless on one gadget could also be irrelevant on one other, whereas a third-party driver or specialised workflow might introduce its personal compatibility threat.

Who ought to set up KB5074105?

Consumer or surroundings	Advice	Purpose
Normal residence consumer with no listed drawback	Wait	There is no such thing as a safety profit that requires this optionally available preview, and the fixes will usually arrive in a later manufacturing replace.
Consumer affected by a listed Explorer, Sandbox, activation, graphics, or boot drawback	Take into account a backup-first take a look at	The replace might handle the particular drawback, however confirm the consequence and maintain rollback obtainable.
Musician, studio, or MIDI developer	Take a look at on a spare or noncritical system first	The MIDI stack adjustments considerably, and Microsoft paperwork device- and driver-specific compatibility points.
IT administrator or software program developer	Use a pilot ring	Preview releases are particularly helpful for validating the following manufacturing replace and enterprise functions.
Reside-performance, medical, industrial, or production-control PC	Don’t make it the primary take a look at machine	Any sudden driver, boot, or utility drawback can have an operational value larger than the preview’s profit.

How you can take a look at KB5074105 safely

1. Verify that the pc is a legitimate goal

Open Settings > System > About and file the Home windows version, model, system kind, and present OS construct. You too can press Win + R, enter winver, and file the consequence.

Proceed provided that the pc is operating Home windows 11 24H2 or 25H2. Report whether or not the machine is x64 or Arm64 in order that any Microsoft Replace Catalog package deal matches the {hardware} and Home windows launch. Additionally file the present construct, BitLocker state, put in safety software program, and important peripherals. If the pc makes use of gadget encryption or BitLocker, be sure you know the place its restoration info is earlier than making a system change.

2. Again up necessary information earlier than altering Home windows

Copy necessary paperwork, mission information, presets, installers, license info, and configuration exports to an exterior drive or a cloud service. A backup must be accessible independently of the Home windows set up you’re about to alter. Microsoft’s Home windows restoration steering particularly recommends backing up necessary information earlier than utilizing reset or reinstall restoration choices as a result of these operations may end up in information loss.

For a bodily backup goal, an exterior SSD for Home windows backup or exterior laborious drive may be helpful. Don’t deal with the drive as a whole system picture merely as a result of it shops copied information; confirm that the information you want are literally current and readable, and use your regular picture or backup software program when you require full-system restoration.

3. Create restoration media

Create a Home windows restoration drive earlier than putting in the preview. Microsoft says a restoration drive requires a USB drive with at the very least 8 GB of free house. An appropriate 8GB USB flash drive for Home windows restoration media must be empty or disposable as a result of creating restoration media reformats the drive. Don’t go away irreplaceable information on it.

Maintain the restoration USB obtainable throughout the take a look at. A restoration drive or Home windows set up media can present a route into the Home windows Restoration Setting if the pc now not boots usually. That is particularly necessary for techniques affected by Safe Boot or Boot Supervisor adjustments.

4. Use a spare or noncritical pc when potential

The most secure preview take a look at is a spare PC, a virtualized take a look at surroundings the place the related workload may be reproduced, or a noncritical pc that may be taken offline. Don’t make a preview cumulative replace the primary take a look at on the one pc used for paid work, reside efficiency, medical tools, manufacturing management, or irreplaceable information.

5. Report a working baseline

Earlier than putting in, restart the pc and take a look at the capabilities that matter to you. Report the consequence reasonably than counting on reminiscence. A helpful baseline consists of:

• Regular startup, sign-in, shutdown, sleep, and resume.
• Wired and wi-fi networking.
• Audio enter and output, Bluetooth, printing, and exterior shows.
• VPN, backup software program, virtualization, and Home windows Hey.
• Home windows Sandbox when you use it.
• Safe Boot standing and any BitLocker or device-encryption habits.
• Specialised functions, license activation, plug-ins, and gadget drivers.
• For MIDI techniques: each DAW, controller, audio interface, bodily port, digital port, Bluetooth MIDI gadget, and required producer utility.

Take screenshots or export settings for complicated audio and manufacturing setups. The purpose is to differentiate a change brought on by KB5074105 from an issue that already existed.

6. Set up via the supposed channel

For an interactive take a look at, open Settings > Home windows Replace > Superior choices > Non-obligatory updates and search for the preview high quality replace. Learn the model and construct info earlier than accepting it.

Directors can use the Microsoft Replace Catalog or their regular administration tooling. When you obtain a catalog package deal, match the Home windows launch and structure precisely: use the 24H2 or 25H2 package deal acceptable to the goal system and choose x64 or Arm64 as relevant. Don’t set up a package deal just because its KB quantity appears to be like related.

Save your baseline notes and backup affirmation earlier than beginning. Maintain the pc linked to dependable energy, and keep away from interrupting the restart levels.

7. Take a look at the highest-risk workload first

Don’t spend the primary hour testing solely the desktop. Take a look at the workload most definitely to be affected by the replace. For MIDI techniques, use this order:

1. Begin the pc and make sure that the producer drivers load with out warnings.
2. Open the DAW or MIDI utility and confirm that bodily enter and output gadgets seem.
3. Play and file via every necessary controller and audio interface.
4. Take a look at digital ports corresponding to loopMIDI or rtpMIDI in case your workflow makes use of them.
5. Take a look at app-to-app MIDI, loopback, shared ports, and any customized port names your software program will depend on.
6. Take a look at Bluetooth MIDI gadgets, older DirectMusic-based {hardware}, and Korg or inMusic drivers if these are a part of the setup.
7. Open an current mission, save a replica, shut it, and reopen it.

For extraordinary techniques, repeat the baseline checks for networking, sleep, printing, VPN, backup, Sandbox, graphics, File Explorer, and Home windows Hey. Test Home windows Replace historical past after the restart and file the ensuing construct.

8. Monitor earlier than increasing the rollout

Use the take a look at pc for the traditional duties that matter, not only a five-minute post-install verify. Look ahead to delayed sign-ins, network-location Explorer hangs, activation prompts, utility crashes, audio dropouts, gadget reconnection failures, sleep/resume issues, or boot warnings.

Broaden from one machine to a small pilot group solely after the related workloads cross. Maintain at the very least one known-good system on the earlier configuration whilst you examine outcomes.

What to do if one thing goes flawed

First resolve whether or not it’s a characteristic change or a regression

Not each distinction after an replace is a failure. A UAC immediate when opening Settings > System > Storage is a documented habits change. In contrast, a tool that disappears from a DAW, a system that can’t boot, or a repeatable utility crash that didn’t happen within the baseline deserves troubleshooting.

1. Test Settings > Home windows Replace > Replace historical past and make sure whether or not KB5074105 put in.
2. Evaluate the habits along with your baseline and observe the precise utility, gadget, driver, error code, and sequence of actions.
3. Test the related producer driver and Microsoft help steering earlier than altering a number of variables directly.
4. Defend or re-copy necessary information earlier than trying restoration.
5. Use the least harmful restoration possibility that addresses the issue.

Uninstall the replace from Home windows

If Home windows nonetheless begins usually, use Settings > Home windows Replace > Replace historical past > Uninstall updates. Choose the standard replace related to KB5074105 and observe the prompts. Restart and repeat the baseline take a look at that failed.

Uninstalling a cumulative replace can take away fixes together with the problematic change. That’s the reason it’s higher to file the symptom and make sure the connection earlier than rolling again, notably when the issue may truly be a tool driver or utility configuration.

Uninstall it from Home windows Restoration Setting

If Home windows won’t boot, begin Home windows Restoration Setting from the restoration drive or set up media. Then select Troubleshoot > Superior choices > Uninstall Updates and use the choice to take away the newest high quality replace.

If the problem is a Safe Boot violation, use the ready restoration media and Microsoft’s restoration course of. Keep away from repeatedly resetting the Safe Boot database or switching Safe Boot on and off, as a result of Microsoft particularly warns that these actions can create or worsen Safe Boot issues on affected 24H2 gadgets.

Why the standard wusa.exe /uninstall command might not work

Microsoft states that the mixed Servicing Stack Replace and Newest Cumulative Replace package deal can’t be eliminated with the extraordinary wusa.exe /uninstall change. For administrator-led restoration, first determine the put in package deal with:

DISM /On-line /Get-Packages

Then observe Microsoft’s documented Home windows replace uninstall process to determine the proper package deal and use the suitable DISM removing course of. Don’t guess a package deal title or take away an unrelated servicing package deal.

MIDI-specific restoration

If the issue is proscribed to MIDI, first seek the advice of Microsoft’s MIDI Providers issue-and-workaround steering and the {hardware} producer’s present driver info. Take a look at whether or not the failure is proscribed to a specific digital port, legacy driver, Bluetooth gadget, or utility. Don’t instantly uninstall KB5074105 as a common MIDI repair: Microsoft’s MIDI engineering workforce warns that uninstalling updates can take away fixes and will produce a worse or damaged MIDI expertise in some rollout conditions.

If Home windows stays usable however has persistent, nonspecific system abnormalities after Microsoft’s built-in troubleshooting and rollback choices, an optionally available third-party Home windows PC restore instrument corresponding to Outbyte PC Restore could also be thought of. Outbyte describes its software program as suitable with Home windows 11 and supposed to scan for frequent system points, clear drives, and optimize efficiency. It isn’t a Microsoft instrument, it can not substitute Home windows Restoration Setting or a verified backup, and it doesn’t show that KB5074105 precipitated the issue. Use it solely after defending your information, evaluate what it proposes to alter, and don’t deal with automated cleanup as an alternative to a driver-specific prognosis.

What to not do

• Don’t set up the preview in your solely manufacturing or live-performance pc merely as a result of it’s obtainable.
• Don’t interpret Microsoft’s “no recognized points” assertion as a compatibility certification for third-party {hardware}.
• Don’t reset the Safe Boot database or toggle Safe Boot settings casually throughout the take a look at.
• Don’t use the restoration USB as extraordinary storage; creating restoration media reformats it.
• Don’t substitute drivers, edit the registry, or use unofficial replace blockers as a primary response.
• Don’t run a third-party restore utility earlier than backing up necessary information and making an attempt the built-in restoration path.
• Don’t purchase new MIDI {hardware} as a generic repair for a driver incompatibility. Confirm model-specific Home windows compatibility first.

Backside line for every kind of reader

Most Home windows 11 customers: wait. KB5074105 is optionally available and non-security, so there may be little purpose to just accept preview threat with out a particular profit.

Customers with a listed drawback: contemplate testing it if the repair instantly addresses your problem, however create backups and restoration media first.

Musicians and MIDI builders: that is probably the most attention-grabbing viewers for the replace and the group that wants probably the most cautious validation. Take a look at each necessary controller, port, driver, DAW, and Bluetooth gadget on a spare system.

IT groups and builders: deploy it to a managed pilot ring to validate functions and {hardware} earlier than the following manufacturing launch.

Manufacturing environments: don’t make KB5074105 the primary replace on a crucial system. Maintain a known-good machine and a examined rollback route obtainable.

Ceaselessly Requested Questions

Is Home windows 11 KB5074105 required?

No. KB5074105 is a non-security preview cumulative replace. Microsoft’s servicing steering says preview updates are for early validation, whereas the common month-to-month safety launch arrives individually. Skipping KB5074105 doesn’t imply skipping the following safety replace; its non-security adjustments are usually included in a later manufacturing launch.

Which Home windows 11 variations and builds does KB5074105 help?

The replace targets Home windows 11 model 24H2 and 25H2. After set up, the anticipated builds are 26100.7705 for 24H2 and 26200.7705 for 25H2. Test Settings > System > About or run winver earlier than and after set up.

May KB5074105 trigger MIDI or audio-device issues?

Musicians ought to take a look at cautiously. KB5074105 improves Home windows MIDI Providers, however Microsoft’s MIDI engineering workforce paperwork compatibility points involving some inMusic, Korg, Hercules, loopMIDI, rtpMIDI, and Bluetooth MIDI configurations. Take a look at the precise DAW, drivers, controllers, digital ports, and audio interfaces on a noncritical pc first.

How do I uninstall KB5074105?

If Home windows begins usually, open Settings > Home windows Replace > Replace historical past > Uninstall updates. If Home windows won’t boot, enter Home windows Restoration Setting and select Troubleshoot > Superior choices > Uninstall Updates. The mixed servicing-stack and cumulative package deal can’t be eliminated with the extraordinary wusa.exe /uninstall command; directors ought to observe Microsoft’s DISM directions.

Does KB5074105 let me flip Good App Management on or off?

Microsoft documented a Good App Management change within the preliminary launch notes, then eliminated it from the KB5074105 documentation and deliberate it for a future launch. Don’t assume that each KB5074105 set up gives the power to toggle Good App Management with out a clear set up.

The Backside Line

Backside line: KB5074105 is a preview for validation, not a safety emergency. Set up it when a selected repair or Home windows MIDI Providers testing justifies the danger; in any other case, await the common manufacturing cumulative replace. In each case, again up necessary information, put together restoration media, and take a look at the precise {hardware} and software program workload earlier than wider deployment.

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