i can not play forza horizon 3 on pc,error DNS

Try this
post in Forza official forums, some users with that error code found a fix for that.

Hello Chris,

Try following this [ANSWERED] [PC] Can't connect to Horizon Life (DNS error) page
for the current situation.

Any other inquiries can be provided to the Forza Forums as the community is based in assisting with everything Forza!

Let us know if this works for you, and we wish you the best.

Thank you!

Sup, Kerem!

Paul from Xbox Forums Team here to assist with the issue, it looks like you're experiencing a teredo error while trying to play games online on your pc such as Forza Horizon 4. I was able to go peek around the internet and I was able to find something out
about this particular issue. I went thru the Forza Motorsport forums and I did find an article that I believe can help fix the issue. Here is the link to that article discussing the topic about

Teredo/DNS error when trying to connect to Forza Horizon 4 servers. I hope this information was helpful in resolving the issue, please let us know how it goes!

Happy Gaming!

Paul Xbox Forums Team!

Hi there Paul,

Thanks for the reply! Here's the thread for theForza Motorsport - PC can't connect to Horizon.

Hope this helps. Let us know.

Hello. After what you suggested we are still on able to get online. It is not just Forza horizon 4 for it is Forza horizon 3 as well. This is the error

Unable to join session

for support, join forums at...

there is s support ID

a server ID

fsiled to redolve server address. Check your DNS settings snd try again.