Windows 11 September Update Causing Problems? Don’t Start Randomly Uninstalling Things

If something stopped working immediately after the September 2026 Windows updates, do not start deleting drivers, installing “repair” utilities, or making Registry changes.

The important point is that an update-related problem may affect only some systems. A known problem does not mean every PC is affected.

First, identify what actually broke

Write down what changed and when.

Did audio disappear? Did one application stop working? Is the computer failing to start, or is the problem limited to one accessory?

Then restart the computer once. A restart is simple, reversible, and worth eliminating before more invasive troubleshooting.

Check Windows Update

Open Settings > Windows Update and check the update history.

If the problem began directly after an update, note the KB number. That gives you something specific to compare against Microsoft’s known-issue information instead of assuming every recent Windows problem has the same cause.

Don't use driver-download websites as your first response

A third-party site claiming to have a “new driver” is not automatically safer than the driver already installed.

Check Windows Update and your computer or hardware manufacturer first.

What about uninstalling the update?

Windows provides recovery options that can remove certain updates, but doing so should be a targeted troubleshooting step rather than the first reaction to any problem.

Before recovery work, back up important files and know where your BitLocker recovery key is stored if encryption is enabled.

If your computer is otherwise usable, first confirm that the problem actually matches a known update issue.

Don't sacrifice security unnecessarily

Security updates exist for a reason. Removing one can restore previous software behavior while also removing fixes.

If you can safely work around the problem while waiting for an official correction, that may be preferable to repeatedly installing and removing system components.

Sources and Further Reading

Microsoft Windows release health and Windows recovery documentation.