Windows 11 24H2: The August Update KB5063878 – everything you need to know at a glance

On August 12, 2025, Microsoft announced the cumulative Security and Quality Update KB5063878 for Windows 11 Version 24H2 published. As part of the regular Patch Tuesday The update brings a new Build number (26100.4946) as well as numerous improvements, including Performance improvements, UI optimizations and new AI-powered featuresWhat exactly is included in the update, which devices will receive it, and are there any known issues? Here's a concise summary of everything you need to know.

 

🗓️ When and how will KB5063878 be released?

📌 Release date & build number

• Release: August 12, 2025

• New build: 26100.4946

📥 Distribution of the update

• Available via Windows Update

• Can also be installed manually via the Microsoft Update Catalog

• Size: around 3 to 3,5 GB

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🔁 Automatic rollout

As usual, the update will be distributed automatically as part of Patch Tuesday and also includes the Servicing Stack Update (SSU).

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🆕 What's new in the August update?

🧠 AI features & Copilot+ functions

• New “Click-to-Do” function and “Recall” extensions

• Smart search field at the top of Settings

• “Smart Reset”: Fast recovery without data loss

• Only on Copilot+ PCs active with at least 40 TOPs

⚙️ Performance & gaming improvements

• Clear FPS increase in games (e.g. Fortnite)

• Optimized resource utilization at system level

• Faster loading times and lower CPU load

🖥️ Visual adjustments & stability

• Modernized BSOD design: Now in black with more precise error display

• Faster display of crash information

• Improved restart process with new user guidance

🛡️ Security and system improvements

• Closed vulnerabilities in the Windows kernel

• Optimized modules for Defender and network services

• Improved driver security

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⚠️ Are there any known issues with the update?

🔍 Event ID 57: One log entry, not a bug

• Error message: “Microsoft Pluton Cryptographic Provider … initialization failed”

• According to Microsoft: Harmless, no impact on the system

• Fix is being prepared

🔒 Compatibility locks

• Dirac Audio (cridspapo.dll): Temporary rollout stop

• Intel Smart Sound Technology: Old drivers cause blue screens

• → Driver update required for update release

🛠️ Installation problems?

• Some users report error codes during the update

• Helpful measures:

  • Run the Windows Update troubleshooter

  • "Reinstall now" under System → Recovery

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✅ Conclusion: Stable update with a view to the future

With KB5063878 Windows 11 24H2 receives an update that closes more than just security vulnerabilities. The introduction of AI features, smart recovery options and significant performance improvements make it one of the most important updates of the year. Those who haven't yet benefited should check their driver versions – everyone else can look forward to a faster, smarter, and visually modern Windows.

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❓ Frequently asked questions about the August update (FAQ)

What's new in KB5063878?

→ AI features, better gaming performance, new BSOD design, and a more stable system.

Why don't I get the update?

→ Probably due to outdated drivers. Check Dirac and Intel components.

Are there any problems after the update?

→ No – only a harmless event log entry is currently being observed.

Can I install the update manually?

→ Yes, via the Microsoft Update Catalog or the Control Panel under "Windows Update".

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 Update:
For possible streaming issues related to the August update, read the article

Streaming Trouble - Windows 11 August Update Causes NDI Problems

Windows 11 KB5063878 SSD crash - causes, models, and solutions

 

 

 

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