Hello, John Harrison
Welcome to the Microsoft Community.
Hello, thank you for your feedback on your issue here, it seems that you are experiencing blurred dialog for watching movies in win11.
You would like to get 5.1 surround sound.
First of all thank you for sharing the information, it seems that you browsed the thread from Kirito.H Replied, if it's convenient for you you can share it here after this so that I am aware of what you have already done. You can go ahead and add some more information after this, including the model or configuration information of your computer and what app you use for watching movies.
I will start by providing you with the regular troubleshooting steps for this type of issue, which you can refer to on a priority basis:
- Check the hardware
Speakers or headphones: Make sure you have a sound system (speakers or headphones) connected that supports 5.1 surround sound. For speakers, this will usually be through the correct audio interface (usually the green, black and orange 3.5mm jacks for front, rear and center/woofer speakers, or if you are using a sound system with a receiver, an HDMI or fiber optic cable).
Sound card: Your computer needs to have a sound card that supports 5.1 surround sound. If you are using an external sound card or audio interface, make sure it is set up properly.
- Update Audio Drivers
Sometimes, outdated or incompatible audio drivers can prevent 5.1 sound from working properly.
Update the audio driver: If you haven't already done so, you can right-click on the volume icon at the bottom right corner of your desktop, select Sound Settings, and then go to Device Manager > Sound, Video and Game Controllers, right-click on your audio device and select Update Driver.
You can also download and install the latest driver directly from the manufacturer's website (e.g. Realtek, Creative, etc.).
- Enable 5.1 Surround Sound in Windows Audio Settings
Right-click the Volume icon on the taskbar and select Sound Settings.
In the Playback tab, right-click the default audio device (which may appear as “Speakers” or the name of your sound card).
Click Properties.
In the Speaker Settings tab, select 5.1 Surround (or 7.1 Surround if there is a 7.1 option).
If you don't see this option, make sure your speakers are connected correctly (usually the green, black, and orange 3.5mm jack connections are required, or if using a receiver, make sure it's connected via HDMI or optical).
Click Apply, then OK to save the changes.
- Configure Dolby Access (if you use Dolby sound)
If your stereo supports Dolby Digital or Dolby Atmos, you may need to use the Dolby Access app.
If not installed, you can install Dolby Access from the Microsoft Store.
Once installed, open Dolby Access and make sure the correct audio format is selected (e.g., select Dolby Atmos for Headphones or Dolby Digital for Home Theater settings).
Follow the application's prompts to complete the setup, making sure to select the correct output device.
- Setting the audio format in Windows
Enable 5.1 Surround Sound in the Playback Settings (step 3), then check the Advanced tab in the same Properties window.
Make sure the Default Format is set to 24-bit or 16-bit audio output at 48000 Hz or higher. Sometimes setting this to DVD quality (48 kHz) can help ensure better surround sound.
If necessary, check Exclusive Mode so that the application can control the audio device exclusively.
- Ensure the Dolby Digital Plus Decoder is Installed
The Dolby Digital Plus decoder is necessary to decode Dolby Digital Plus content, especially when playing movies or using streaming services.
You can check for and install the Dolby Digital Plus decoder in the Microsoft Store, but it's not required for all setups. If your drivers and devices are properly configured, you usually don't need to install this decoder additionally.
- Check Audio Playback Software (if using a media player)
If you are using a media player (e.g. VLC, Movies & TV, or other application), make sure that the software is properly configured to output 5.1 audio.
For example, in VLC, select Tools > Preferences > Audio and set the Output Module to DirectSound or WaveOut to enable surround sound playback.
You can try it out by referring to the steps above, and after that, give some feedback and I will further support you.
Best regards
Bobhe | Microsoft Community Support Specialist