Windows 11’s emergency update still breaks audio on some PCs, and it looks like a fix won’t arrive until October 2026 Patch Tuesday, which is scheduled for October 13.

On September 8, Microsoft released KB5124008, the September 2026 Patch Tuesday update, which broke RDP connections and made host folder shares unavailable in Linux VMs used by apps such as Claude Cowork.

Six days later, on September 14, Microsoft released KB5129195, an emergency update that addresses the RDP and Claude Cowork issues, along with additional security protections.

Before that fix, Remote Desktop connections could fail after a few minutes, or you could get stuck at the “Please wait for the Remote Desktop Configuration” screen. In the case of Claude Cowork, the app could no longer work with your local files, even if you’d already given it permission.

Microsoft confirmed that Claude Code and other Linux-based apps issues were tied to Windows 11’s update, with the company noting in updated documentation:

“Applications or sandbox environments that depend on these shared folders might display an error indicating that no Plan9 drive shares were mounted. Claude Cowork and the Windows Subsystem for Linux (WSL) are two of the applications affected by this issue. Standard Hyper-V virtual machines that do not use the Plan9 feature are not affected by this issue.” – Microsoft

Thankfully, these two issues are fully patched with Windows 11 KB5129195, which is this month’s emergency (or out-of-band) update. It’s also cumulative, which means it includes changes from previous updates, including September’s Patch Tuesday release. This patch advances Windows 11 25H2 to Build 26200.9457 and 24H2 to Build 26100.9457. You can check which build you’re running from Settings > System > About.

However, KB5129195 emergency update still breaks audio on some PCs and causes issues with some enterprise systems. Based on reports seen by Windows Latest, domain-joined PCs are losing their secure trust relationship with the domain, which breaks login using usual workplace credentials.

For consumers, that means some devices could end up without any working audio, regardless of the update you install this month.

Of course, not everybody is affected. Microsoft won’t say how many users are affected, but the company has quietly updated its support documentation to confirm these two bugs in Windows 11’s emergency update, which was supposed to address issues caused by the September 2026 update.

Microsoft warns that this month’s emergency update also causes “no audio output” and shows an error, “This device cannot start (Code 10)” in Device Manager. At the same time, there’s another bug where the volume remains at zero, and any attempt to control it does nothing, as audio remains entirely unresponsive.

In its investigation, Microsoft says it found that only USB audio devices are affected, but we’re seeing reports from more users.

Right now, it’s unclear exactly when Windows 11’s audio issues will be resolved, but Microsoft has promised it’s looking into the root cause and will share more details when it can.

Now, the catch is that if you haven’t run into audio issues yet, there’s no guarantee you won’t in the next few days or weeks because Windows 11 features are always gradually rolling out. And there’s a high chance the recent audio issue is tied to one of the improvements made in the September updates.

So, if your device is affected but isn’t showing any symptoms, you might run into the issue later. And in most cases, nothing will happen.

Windows 11’s emergency update doesn’t list a fix for AMD GPU errors

We’re also tracking reports of GPU issues on AMD PCs after the September update. Some users have reported driver timeouts, black screens, missing displays, and system freezes, even when they aren’t playing games.

The reports involve multiple Radeon GPUs, including the RX 6600, RX 7700 XT, RX 7800 XT, RX 7900 GRE, RX 7900 XTX, and RX 9070 XT, so they aren’t limited to one model.

Some users told Windows Latest that switching to older GPU drivers doesn’t help, but removing the September update appears to address issues. That makes Windows Update a suspect, but the exact cause remains unclear. Unfortunately, KB5129195 doesn’t list a fix for these GPU errors.

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