Can't add another account/profile to XBOX Series X.

To download your profile on an Xbox Series X|S or Xbox One console, follow the instructions on here https://support.xbox.com/en-US/help/account-profile/manage-account/add-remove-account-xbox-one

What games are you transferring? Which consoles are involved? If it's transferring from, say, a Series X/S to an Xbox One, then it may be because the games are S/X versions.

As to the expansion pack, I believe that is only available to the account that bought it and the console that account is on...it can't be transferred to another account on another console

Hi,

Yes, you can. Refer to:

How to add or remove an Xbox profile on Xbox 360 | Xbox Support

If you don’t want to delete any associated data with the account/profile, be sure to select Delete profile only, then all your saved games and achievements won’t be affected.

Additionally, this guide explains how to remove an account on an Xbox One or Series X|S console:

Add or remove an Xbox profile | Xbox Support

Hope this helps.

Same. My friend has both and Xbox gamertag (on Series X) and a PC. Owns both versions. I'm on Series X and we can't play unless he's on Xbox. Can't add his Origin ID to my EA friends. Not sure what to do.

Make 1 of the Xboxes the "Home Xbox". When done make sure privacy and sharing preferences are set on the "Home Xbox" to share. After that all the games on the "Home Xbox" are accessible by any profile added to that "Home Xbox. The other (non "Home Xbox) has to have the game purchased under that 2nd Xboxes main profile or purchased as a gift from any profile and sent to a chosen profile to be downloaded when that profile signs onto their Xbox. I have an Xbox One X in my living room controlled by my 2nd account profile. I have a Series X in my game room "Home Xbox" controlled by my 1st profile. Example; I log on the Series X with that main profile and buy/download Division 2 with all expansions and passes. I then log on the One X with my 2nd profile (main for that One X) and buy/download Division 2 with out the expansion and passes. So now a family member adds their profile to the One X, if they own the Division 2 they can play it and as much of the content that I have purchased. To play the full version on the One X someone has to buy it for that console, However anyone else that logs onto the One X with their profile that doesn't own any of Division 2 content can't play it at all. They can launch it but it will direct them to the store. Now adding Ultimate Game Pass to the One X allows profiles to download and play any games available through game pass. Remember my Series X will allow any profile added and signed onto can play any games and use the Ultimate Game Pass to download and play from my Series X. One X has limitations for profiles due to that profile owners games owned and which games are in the One X. Confusing ........ ?