Microsoft has acknowledged that its August 2025 security updates are causing significant performance problems for users running streaming software on Windows 10 and Windows 11 systems.

## The Problem

Users across both Windows platforms are experiencing severe lag, stuttering, and choppy audio/video when using NDI (Network Device Interface) streaming software. The issues particularly affect popular streaming applications like OBS (Open Broadcast Software) and NDI Tools, especially when Display Capture is enabled.

According to Microsoft, these problems persist even under low bandwidth conditions and are directly linked to two specific security updates: KB5063878 for Windows 11 24H2 and KB5063709 for Windows 10 21H2/22H2.

## Technical Details

The NDI development team has confirmed that the problematic Windows updates cause NDI traffic to drop unexpectedly. Importantly, the issue only affects RUDP (Reliable UDP) connections, while standard UDP and Single-TCP connections remain unaffected.

## Temporary Solution

While Microsoft investigates the issue, NDI has provided a workaround that requires changing the connection protocol:

1. Download and install the free NDI Tools pack
2. Launch the NDI Access Manager application
3. Navigate to the Advanced tab
4. Change the Receive Mode from RUDP to either Single TCP or UDP
5. Click OK and repeat these steps on all affected computers

## Broader Update Issues

The August security updates have caused multiple problems beyond streaming issues:

– **WSUS Installation Failures**: Updates delivered through Windows Server Update Services failed with 0x80240069 errors
– **Recovery System Breakdown**: Windows reset and recovery operations stopped working, requiring emergency patches
– **Storage Drive Problems**: Microsoft is investigating reports of data corruption affecting both SSDs and hard drives on Windows 11 24H2 systems

## What This Means

These widespread issues highlight the complexity of modern Windows updates and their potential impact on specialized software. Content creators, streamers, and IT professionals using NDI-based workflows should implement the temporary workaround while awaiting Microsoft’s permanent fix.

The company continues to investigate these problems and has requested user feedback to help resolve the storage-related issues affecting Windows 11 24H2 systems.