Windows 11 September Update and Radeon Crashes: What We Know

As of September 26, 2026, Microsoft has not acknowledged a Radeon problem with Windows 11’s September update, and neither has AMD. Owners of several Radeon cards report driver timeouts, black screens and freezes since KB5124008 arrived on September 8, 2026, and some say removing the update stopped it, but what exists so far is user reports relayed by press, not a confirmed bug with a known cause.

That gap matters if you play on a Radeon: uninstalling a security update is a real trade-off, and the evidence does not yet justify treating it as the obvious fix.

What is confirmed

• The update exists and is documented. Microsoft’s page for KB5124008 (September 8, 2026; builds 26200.9445 and 26100.9445 for Windows 11 25H2 and 24H2) lists known issues around domain trust, USB audio, Hyper-V shared folders, Remote Desktop Services and File History. It does not mention AMD, Radeon or graphics drivers.
• Microsoft did ship an emergency fix, but not for Radeon. The out-of-band update KB5129195 (September 14, 2026; builds 26200.9457 and 26100.9457) addresses Remote Desktop instability, Hyper-V Plan9 folder sharing and part of the USB audio problem, plus a security fix for CVE-2026-62721. Its page has no GPU or AMD entry either.
• The latest preview update does not mention it. The optional KB5124010 (September 22, 2026) lists no Radeon issue.
• Microsoft’s release health dashboard has no Radeon entry. The Windows 11 25H2 and 24H2 known-issues pages were last updated on September 25, 2026, and neither lists an AMD, Radeon or display-driver problem. One entry does say “black screen”, but it is a different bug: a black screen after sign-in on virtual desktop hosts, tied to an August update.
• AMD has not said anything we could find. AMD’s Adrenalin 26.9.1 release notes pre-date the Windows update (the driver is dated September 2, 2026) and their known-issues list does not mention it. We found no later AMD statement or driver note on the subject.

What is only reported

The reports are consistent in their symptoms. TechSpot (September 15) describes Radeon owners seeing “driver timeouts, black screens, displays dropping out, and full system freezes” after the September 8 update, and says not every Radeon system is affected. Windows Latest, citing Reddit posts, names the RX 6600, RX 7700 XT, RX 7800 XT, RX 7900 GRE, RX 7900 XTX and RX 9070 XT. PCWorld likewise notes that some Radeon PCs are still having issues after the emergency patch.

Note what those outlets are relaying: community posts and forum threads, not Microsoft or AMD findings. Windows Latest’s headline says Microsoft “confirms major issues” with the update. That refers to the Remote Desktop, folder-sharing and audio problems on Microsoft’s own list, not to Radeon.

The most detailed single report we could find comes from one affected user, as relayed by Neowin and Windows Report. It describes driver timeouts within seconds of installing AMD’s drivers, and Adrenalin freezing the PC while the displays lost signal. Event Viewer pointed at amdxx64.dll. That user also rolled KB5124008 back to August’s update and rolled back the .NET update KB5126052, and says neither helped. Neowin itself says it is hard to tell whether the September updates are responsible.

Do older drivers or uninstalling the update help?

• Older drivers: Windows Latest reports that switching to older GPU drivers does not appear to make a difference, and reasons that this “makes the Windows update the stronger suspect.” That is the reporter’s inference, not a test result. It fits the user report above, in which a clean driver reinstall did not stop the timeouts.
• Uninstalling the update: TechSpot says some users report that uninstalling the September update resolves the crashes, and Windows Latest (September 21) says removing it appears to address the issues. The single detailed user report above says the opposite. We could not find how many people are on each side, or any controlled test.
• A fix on October 13? Some headlines point to Patch Tuesday on October 13, 2026. In Windows Latest’s own article that date is its inference about when fixes might arrive, not a Microsoft commitment, and Microsoft’s quoted comment there concerns the USB audio bug, where it says it is looking into the root cause. We found no Microsoft statement about a Radeon fix or a date.

What to do if you are affected

Our read, based on Microsoft’s documentation rather than any testing:

• If your PC is fine, leave it alone. Reports describe some Radeon systems, not all, and the cause is unconfirmed. If you have not installed the September update and want to wait, Microsoft’s pause option holds updates for up to 35 days at a time, and updates resume automatically when the pause ends.
• If crashes began right after the September 8 update, check your update history and note whether the timing lines up before changing anything. Reports so far are mixed on whether uninstalling helps.
• Removing an update is possible but not free. Microsoft’s uninstall guide puts it at Settings > Windows Update > Update history > Uninstall updates, notes that some updates cannot be uninstalled, and says to understand the risks before removing a security update. If Windows will not start, the same page describes an uninstall route from the Windows Recovery Environment. Our step-by-step guide to uninstalling or pausing a Windows 11 update covers the process in more detail.
• Weigh the security cost. KB5129195 carries the fix for CVE-2026-62721, which Windows Latest reports Microsoft revised after finding the original September patch did not fully close the flaw. Rolling back September’s updates could leave that flaw open again, and Windows may try to install the update again later.
• Report it to Microsoft. Microsoft says problems with updates can be reported through the Feedback Hub app.

What would change this picture

An entry on Microsoft’s release health pages, a note from AMD, or a fix listed in the October 13, 2026 Patch Tuesday update would settle the question. Until one of those appears, “Windows update breaks Radeon GPUs” is a credible pattern in user reports, not an established fact. This piece is current as of September 26, 2026 and will be updated when that changes.