Hey there Robarama,
I apologize about the late response, thank you for your patience! Were you able to fix that audio issue? If not, I'd be happy to help out, let me just ask you some questions to better understand the problem:
I look forward to your response, and if you have any other questions or concerns for me, please let me know!
Started happening over a couple of years ago. For each streaming provider that didn't work, I wouldn't use Chromecast to the TV. Paramount Plus was the latest provider which started not to work in October 2021. That was my final straw because I watch Paramount Plus a lot.
No problem! Here is a thread from the past with a similar error message, here is a solution that the user Alex Saa had:
"After the recent windows 10 update, the time of the windows was messed up. It seems the time on your device must be 100% correct in order for the Chromecast to work. I fixed the time to correct number (It was showing 1 AM when it was 8 PM) and the problem is fixed. I can now cast my tabs etc."
Would you be able to give that a try and see if it resolves the issue?