A recent security update for Windows 10 and Windows 11 has created serious issues for professionals and students who rely on specific software for their work and creative projects. The update, identified as KB5063878 for Windows 11, is causing problems for users of Autodesk products like AutoCAD and for content creators who use OBS with NDI for streaming. This guide will walk you through what is happening, why it is happening, and what you can do about it.
Table of Contents
- The Problem with AutoCAD and Administrator Access
- Which updates are causing this?
- What software is affected?
- What is the immediate solution?
- Streaming Troubles: Audio and Video Lag with OBS and NDI
- How does the update break NDI?
- How can you fix the streaming lag?
- The Bigger Picture: A Difficult Month for Windows Updates
The Problem with AutoCAD and Administrator Access
If you use programs like AutoCAD, you may have run into a strange and frustrating issue after installing a recent Windows update. When you try to open the software, a window pops up asking for administrator permission. This is known as a User Account Control (UAC) prompt.
For many users, especially students in a school lab or employees at a company, their user accounts are “standard” accounts, meaning they do not have administrator rights. This security measure prevents unauthorized changes to the computer.
The problem is that AutoCAD should not need this permission for normal use. Because the update is incorrectly triggering this UAC prompt, users with standard accounts are completely blocked from opening the software. Even if you are on an admin account, seeing this prompt can be confusing. If you cancel the prompt, the program doesn’t open and you might see an error message, such as MSI error 1730.
This issue began appearing around the second week of August 2025, which lines up with Microsoft’s regular monthly update schedule, often called “Patch Tuesday.”
Which updates are causing this?
The problem is linked to several recent cumulative updates for both Windows 10 and Windows 11:
- Windows 11: KB5063878, KB5063875, and KB5064010
- Windows 10: KB5063877 and KB5063709
What software is affected?
Microsoft has confirmed that the issue impacts several Autodesk products, from the 2022 versions all the way to the newest 2026 releases. This includes popular programs like:
- AutoCAD
- Civil 3D
- Inventor
Both Microsoft and Autodesk, the company that makes AutoCAD, are aware of the problem and are reportedly working together on a permanent fix. However, they have not yet announced when that fix will be available.
What is the immediate solution?
For now, there is only one effective workaround if you are experiencing this issue: you must uninstall the Windows update that caused it. After uninstalling the update, it is a good idea to pause Windows updates for at least a week to prevent the system from automatically reinstalling the problematic patch. This is a difficult choice to make, as these updates often contain important security fixes. You have to weigh the need to use your software against the potential security risks of pausing updates.
Streaming Troubles: Audio and Video Lag with OBS and NDI
The same Windows update, KB5063878, is also causing major headaches for content creators, particularly those who stream on platforms like Twitch. Users have reported that their audio and video feeds suddenly begin to lag, stutter, or become choppy. This problem is not related to your internet connection, but is a direct result of the update.
The issue specifically affects streamers who use a technology called NDI (Network Device Interface). NDI is a popular tool that allows you to send high-quality video and audio between computers over a local network. A common use for this is a two-PC streaming setup, where one computer is used for gaming and the other is dedicated to encoding and streaming the video.
This setup helps ensure smooth gameplay and a high-quality broadcast. An open-source tool called DistroAV, which adds NDI functions to the popular streaming software OBS (Open Broadcaster Software), is now broken for many users because of this update.
How does the update break NDI?
The problem seems to be with how the update handles a specific type of data transport called “reliable UDP.” The technical details involve packet timing becoming uneven, causing the data buffers to fill up and drain inconsistently. In simple terms, the smooth flow of video and audio data is disrupted, leading to the lag and stuttering you see on the stream. The issue is most noticeable when the source PC is using “Display Capture” in OBS or NDI Tools.
Users have described the performance as “liquid smooth” before the update and then stuttering hard every few seconds after installing it. For streamers whose careers depend on producing high-quality content, this problem is a significant disruption. Many are concerned about having to go without security updates indefinitely, but the issue makes their streaming setup unusable.
How can you fix the streaming lag?
If you are affected by this NDI streaming bug, there are a couple of things you can try before resorting to uninstalling the update:
- Change the NDI Receive Mode: The company behind NDI suggests going into your NDI settings and changing the “Receive Mode” to either TCP or UDP. The problem seems to be specifically with the RUDP (Reliable UDP) setting.
- Uninstall the Update: If changing the NDI mode does not work, the only other solution is to uninstall the KB5063878 update. Just like with the AutoCAD issue, you should also pause updates to prevent it from being reinstalled automatically.
Microsoft has acknowledged the bug in a support document and has stated that a fix might be included in a future update.
The Bigger Picture: A Difficult Month for Windows Updates
This August 2025 cumulative update has been particularly troublesome. Before these issues with AutoCAD and NDI streaming came to light, Microsoft had already confirmed that the patch could cause some Solid-State Drives (SSDs) to become corrupted or even disappear from the system entirely. When you combine all these problems, it paints a picture of a difficult update cycle for many Windows users.
It highlights a persistent challenge for both Microsoft and its users: balancing the critical need for security patches with the equally critical need for a stable and functioning operating system. For professionals, students, and content creators, when an update breaks the essential tools they use every day, it can have a direct impact on their work, education, and income. This is a classic “Your Money or Your Life” (YMYL) scenario, where the advice given can have real-world consequences.
As an advisor, the best course of action is to be cautious. Before installing major Windows updates, it can be helpful to search online to see if other users are reporting any widespread issues. Waiting a few days can often save you from the initial wave of problems that a new patch might cause. For now, if you are affected by the AutoCAD or NDI bugs, the recommended solution is to carefully uninstall the problematic update and wait for an official fix from Microsoft.