You can use the following instructions to fix the Twitch error code 4000:

- At first, try to play the stream in the pop-up player.
- After, that you need to clear off the PC Errors.
- Next, make sure to run a PC Scan with Restore Repair Tool to check for the errors causing security issues.
- Finally, once the scan completes, the process will repair damaged files with fresh Windows files and components.
- Secondly, then comes the Twitch pup up player.
- Now, tap the Settings icon in the right corner of the stream.
- And then choose Popup Player.
- Further, try to refresh the stream.
- Moreover, refreshing could fix the issue.
- To refresh the stream, hold the Ctrl + R buttons on the keyboard or tap the browser’s refresh icon.
- Similarly, make sure to exit all the active media players.
- To access the Task Manager, right-click Taskbar and choose the Task manager process tab.
- On the Task Manager window, choose each media player and tap the End process.
- Exit the Task Manager and try reloading the stream to see if it works.
- Besides, try to delete the audio hardware.
- Remove the hardware from the PC and try loading the stream again.
- And verify whether the error has been resolved or persist.
- At last, try to change Google Chrome’s autoplay setting.
- Ensure that you have a blank page open in Google Chrome
- Tap the address bar and enter chrome: flags, then tap Enter on your keyboard.
- Look for the Autoplay policy > choose Document user activation is required.
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