Microsoft is still working through several problems introduced by Windows 11’s September 2026 updates, including USB audio failures, AMD Radeon instability and File History issues.
The most immediate problem for some users is broken USB audio. Microsoft is not expected to deliver an official fix until the next Patch Tuesday on October 13, 2026.
That means affected systems may continue experiencing missing audio, broken volume controls or nonfunctional sound settings for several more weeks.
USB audio problems can leave systems without sound
The September update can cause some USB audio devices to stop functioning correctly.
One of the common symptoms is a Code 10 error appearing in Device Manager, indicating that Windows cannot start the affected device.
Other reported problems include complete loss of audio output and volume controls that either stop responding or remain stuck at zero.
Some systems may also lose access to sound settings entirely.
| Windows 11 issue | Reported effect |
|---|---|
| USB audio | Code 10 errors and no sound |
| Volume controls | Can become unresponsive or stay at zero |
| Sound settings | May fail to open or respond |
| Multi channel audio | May fail even when stereo works |
| AMD Radeon GPUs | Driver timeouts, black screens and crashes |
| File History | New backups may fail and older backups may become unavailable |
| Expected audio fix | October 13, 2026 |
Another unusual issue affects systems that still work correctly in basic stereo mode but fail when multi channel or 3D audio features are enabled.
For people using USB headsets, external audio interfaces or other connected sound hardware, that can significantly affect everyday use.
AMD Radeon problems also remain unresolved
The September Windows updates have also been linked to instability on PCs using a range of AMD Radeon graphics cards.
Reported symptoms include driver timeouts, black screens, system crashes and displays disappearing from Windows.
The affected hardware reportedly includes several popular Radeon models such as the RX 6600, RX 7700 XT, RX 7800 XT, RX 7900 GRE, RX 7900 XTX and RX 9070 XT.
The problem is not limited to gaming workloads.
Some people have reported crashes or display issues during normal desktop use as well, which makes the bug more disruptive than a game specific driver problem.
Microsoft has not yet provided a complete fix for these Radeon related issues.
File History bugs could affect backups
File Explorer and File History are another concern following the September Patch Tuesday updates.
The reported problem can prevent Windows from creating new backups through File History.
More seriously, some previously created backups may no longer appear accessible after the update.
That creates a potential data recovery problem because File History is specifically designed to preserve older versions of personal files.
Anyone who relies heavily on File History should therefore check that recent backups are actually being created and that older versions remain accessible.
The supplied report says these File History problems remain unresolved.
Some September problems have already been patched
Not every issue from September is still outstanding.
Microsoft has already released an emergency update addressing other problems caused by the same update cycle.
Those fixes included an issue affecting Claude Cowork and Remote Desktop Services.
Microsoft also resolved a false Defender warning that appeared on some Windows 10 and Windows 11 systems.
However, the more disruptive USB audio, AMD Radeon and File History problems remain.
October Patch Tuesday is now the main target
For USB audio in particular, October 13 is the important date.
Microsoft is expected to include the official fix in its next scheduled Patch Tuesday release.
Until then, affected users may have to rely on temporary workarounds, rollback options or alternative hardware where possible.
The situation is especially frustrating because several of the problems affect basic system functions rather than optional features.
Audio output, graphics stability and backups are core parts of a Windows PC, so issues in all three areas can have a noticeable impact on daily use.
For now, anyone experiencing unexplained USB audio failures, Radeon crashes or missing File History backups after the September updates should be aware that the problem may be tied to Windows itself rather than faulty hardware.
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