No sound with Windows 10 October 2018 Update in combination with certain Intel display drivers

Another issue has been discovered in Windows 10 October 2018 Update. Users with Intel display driver versions 24.20.100.6344 and 24.20.100.6345 can encounter issues with audio playback from a display or TV not functioning properly. The issue is isolated to screens connected via HDMI, DisplayPort, or USB Type-C.

Microsoft says they're cooperating with Intel to resolve the problem.

In September, Intel inadvertently released versions of their display driver (versions 24.20.100.6344, 24.20.100.6345) that accidentally turned on unsupported features in Windows. After updating to Windows 10, version 1809, audio playback from a monitor or television connected to a PC via HDMI, USB-C or Display port may not function correctly on devices with these drivers.

Microsoft is currently blocking devices with these drivers from installing Windows 10, version 1809, and we are working with Intel to expire these display drivers and provide a resolution in an upcoming release.

If you are running Windows 10, version 1809 and you are unsure whether your PC is affected, use the following direction to see if your device is affected. Once you’ve confirmed your device has the incompatible driver, please contact Microsoft support directly at 1-800-MICROSOFT or find a local number in your area.

A Microsoft agent can resolve the issue by running a file on your device that will turn off the feature that is incompatible with these Intel drivers.

To determine if your PC is affected

1. From the Start menu, type Device Manager in the search box. Select Device Manager from the search results.
2. Find and expand Display adapters.
3. Right-click on the Intel® HD Graphics device.
4. Select Properties.
5. Click the Driver tab.
6. Check your driver version. If the driver version is listed as either 24.20.100.6344, or 24.20.100.6345, your system is affected by this issue. Please contact Microsoft support for a resolution.