"To cast, give Chrome access in system settings." -- which system settings?

I solved the problem by installing previous version of Chrome 

Try it in an incognito tab. Worked for me only when using an incognito tab.

The current public version of Sequoia is 15.2. Update to it and test the Chromecast.

Does the TV set you're using use AirPlay? If so try using that.

I’d suggest downloading Brave browser as it’s the same as Chrome and even better. So much easier than going through all these hoops.

Macbook Pro. Same issue getting "to cast give Chrome access....". I reloaded Sequoia and Sequoia 15.3 loaded. It works fine now. Go figure?

I contacted Google Chromecast Support yesterday. Here are the primary verbatim responses about this issue:

• "Please rest assured there is nothing wrong with the TV, Home app and chromecast device. It is due to the new update on iMAC. And this is a common issue that many users are facing since the new update."
• "The issue can be resolved by signing into the Winston apple account through the Apple MDM. For most of the users using MAC."

I am able to use Screen Monitoring to bypass the challenge.

Yeah, those are the same symptoms I have. Lately for some unexplained reason Chrome asked for access to network and I granted permission. After that, casting worked. That was still with Sequoia 15.01. Since then I have updated to Sequoia 15.1 and the problem is back. That is the same symptom I had when I logged in as admin. After I granted permission to Chrome, casting worked until I rebooted. Canary still works. Puzzling.

I followed the steps, but had to take exceptions. For step 1, there was no entries for Google Chrome in Screen & System Audio Settings. So, I installed Google Chrome, then went back to enable it in Screen & System Audio Settings. I did not add Google Chrome to System Audio Recording Only. I was not certain if that overrides Screen & System Audio Settings, so left it alone. For step 5, I saw that Google Chrome was enabled--just two instances, not five. At that point, I checked to see if Cast worked and it did. At that time or thereabouts, I was prompted twice within a minute or two to allow Chrome to access the local network. I enabled it in both cases. I checked Cast and it worked. Since I have been able to make this work before by enabling via Administrator only to find out that it failed after rebooting, I rebooted the system to see if Cast still worked after reboot. It did!

It is difficult to tell if this was fixed in Sequoia 15.1 or in the latest version of Chrome, which I just updated after installation. For accurate troubleshooting, I like to chang only one variable at a time, but did not in this case. At any rate, between the two upgrades--Apple and Google, the problem appears to be resolved. I'll be back here again, though if the problem happens again. Thanks everyone for contributing. This has been a real puzzle, but this seems to have been one that users had no control over. Too bad.

Cheers.

Just did this and it also worked for me, thanks 🙏🏼.

until now, the only solution I had found that worked was downloading Google chrome beta and using that when needed to chrome cast (which still works as well).

I tried everything written on this page but nothing worked. I am an engineer and had worked on casting in the past. So I thought of trying to start the casting and discovery protocol manually using terminal for the first time and see post that other applications start picking it up or not. And it worked!!!

1. Open Terminal on your mac
2. Install socat on terminal

brew install socat

3. Start a listener

socat UDP4-RECVFROM:6789,ip-add-membership=228.5.6.7:0.0.0.0,fork -

4. Open another terminal, press cmd + n

5. Broadcast message.

echo "Hello world" | socat - UDP4-DATAGRAM:228.5.6.7:6789

You would have received a Hello world message in the first terminal window. And that's it.

Go to chrome or youtube now and try casting.

YES!!! this was it. THX

I have done everything else. From resetting to reinstalling.

Privacy setting---->Local network > ON

Display sharing.

So all these are on and it still wasn't working. Now all these are on and I am implemented this code inside of the chrome and it works. I don't know if it's a combination or if it's just the chrome code. Hope this helps.

I managed to fix it by switching OFF "Screen and System Audio Recording???? Hope this helps someone.

This worked like a charm after multiple downloads and Settings' tampering. All I had to do was re-sync my Chrome and I'm set up for casting once more. Thank you Mr. Wilfridus!

This actually worked for me. Turns out it opened a fresh new chrome browser window and that was able to find devices on my network. I am not sure why.

same issue, tried everything - nothing works. happy for chrome canary that's not updated to the latest version, can still cast with that although the local network access permission screen appears every time the browser is restarted (plus 6 items from canary under local network permissions in system settings). frustrating.

sidenote: looks like similar issue has occurred in the past!

https://forums.developer.apple.com/forums/thread/669963