Xbox one not letting me start parties or invite people to them since latest Alpha update...

Am also having this issue since the update. Cannot join parties, cannot invite people to party i've started either. Error message, 'can't connect to xbox live party'. Can join game invite and can invite people to game without any issues. Will try the above
when I get home, fingers crossed.

For me it is fixed since latest alpha update. Didn’t had the issue since 2 days they also said that they fixed it.

Atleast for me it wasn’t a hardware issue

Gonna have to agree here. Removing the choice for PC players to start a party is just a really stupid oversight, I can't even invite somebody to start a party.

To invite people I have to already be in somebody else's party.

Right-clicking a person in the social tab no longer shows the "Start Xbox One Party" option like it used to. Now it only shows "Start Voice Chat" (These are not the same things as most Xbox Ambassadors think they are)

I don't see the point in changing how an Xbox party works on PC. It's been this way since the 360, it works perfectly well, there's no point to change it.

(Everything is fully up-to-date, Not a single update pending).

"As a result of the changes to the Party App in this initial update, party chat, party matchmaking, and party invites will NOT be compatible between Xbox One consoles that are previewing this update and those that are not. Once this one-week preview of the
update is completed and the update is released to the general public, party features should work normally between all Xbox One players. Non-party multiplayer and chat are not affected by this, meaning you will still be able matchmake, chat, and play with all
Xbox Live players regardless of update status inside of game titles. If you have friends that you use the Party App with that have not been invited to preview Xbox One updates, you can invite them by posting in the Invite a Friend to Preview Xbox One Updates
Forum."

"Please note: As a result of the changes to the Party App in this initial update, party chat, party matchmaking, and party invites will NOT be compatible between Xbox One consoles that are previewing this update and those that are not. Once this one-week
preview of the update is completed and the update is released to the general public, party features should work normally between all Xbox One players. Non-party multiplayer and chat are not affected by this, meaning you will still be able matchmake, chat,
and play with all Xbox Live players regardless of update status inside of game titles. If you have friends that you use the Party App with that have not been invited to preview Xbox One updates, you can invite them by posting in the Invite a Friend to Preview
Xbox One Updates Forum."