Why won’t it allow me to join a group post on games?

Hi there! I am sorry to hear about the issue. Let's see what we can do about that here.

For us to isolate the issue, I will be asking few questions.

Does the issue happen to other games when you create a group post?
What steps have you done so far?
Did you already test a different Xbox profile if you could create a group post?

Be sure to follow the guide in creating one via the link below.
- https://support.xbox.com/help/friends-social-ac...

I've found for you a reddit thread that details the same issues that may have an answer for why you're having issues. The most likely answer could be social feature outages could be going on/your console is having issues communicating information over Xbox
Live via the internet. Try to restart the console and maybe your router to see if that helps.

Here's the reddit link.

https://www.reddit.com/r/xboxone/comments/7e2yhd/looking_for_group_not_working/

You could also check this out for more information about the various features of the LFG's on Xbox. One of them is bound to have a common issues page. https://support.xbox.com/en-US/browse/xbox-one/xbox-live/Clubs and Looking for Group

And for future reference here's the Xbox Live service outages page. Currently everything is up, so the issue is most likely on your internet's end.

https://beta.support.xbox.com/xbox-live-status

So your saying can’t use a LFG to use an in game mechanic all because Xbox won’t allow it. Then why do they allow the game on there platform, and why is 90% of the LFGs for fallout the same kind of posts

Yes, but none of these actually allow you to join a club. I don’t want to create a group post. And you can’t access clubs through game bar

Hi, I hope you're doing great out there despite the issue that you're experiencing. I am an Independent advisor and I am here to help you in regards to your concern.

Please perform an extended powercycle and reset your network hardware by following the steps below:

1. Unplug the power cable from the back of the router, modem, or gateway for 5 minutes. If you have a router and a modem, unplug the power cable from both devices.

2. Press and hold the Xbox button on your console for 10 seconds or until it turns off then wait for 2 minutes before turning it on again.

3. After 5 minutes, plug the modem or gateway in first, and wait for all the lights to return to their normal state.

4. If you are using a router, plug in the router and wait for all the lights to return to their normal state.