I can download the base game but I CAN'T download the DLCs :(

Oh my! Well, I suggest you try this:

Open the Settings app it is the gear in the start menu.

Open Accounts

Click Sign-in Options

Scroll down to Privacy

Uncheck "Use my sign-in info to automatically finish setting up my device and reopen my apps after an update and restart."

Restart your PC!

Thanks for your solution,I will save it for the next time I encouter this error again.I have fixed it by using cloudflare WARP,I just accidentally turn on and it worked like a charm

Many thanks for your advice by the way !

Hi there SpeedSlasher welcome to the community forum! Christopher here, an Xbox fan just like you and has been on Xbox for years already. I would really love to make your day by helping you out. I suggest you try these basic troubleshooting steps!

Open Settings, click Update and Security and then Windows Update;

Click Check for Updates;

Click the Download and Install Now option, if available;

Also, check the Microsoft Store for any updates on the Xbox apps and its services.

Then try this:

Go to windows settings > apps > search for gaming services app > click on it and select advanced options.

After that, click repair and then restore, open the app and try again.

Then do the same for the Xbox app:

Go to windows settings > apps > search for Xbox app > click on it and select advanced options.

After that, click repair and then restore, open the app and try again.

If it still doesn't work you're going to uninstall the games services using a powershell command, then you're going to open the gamepass app, it will ask you to download and install the game services again :

In the windows search bar type Powershell > Right click and select open as administrator > Type the command: "get-appxpackage Microsoft.GamingServices | remove-Appxpackage –allusers" > Wait for the process to finish and then restart the PC, then open your Xbox gamepass app, it will ask you to install the gaming services again, install it and try again.

Hello Christopher Revoredo Gutiérrez ,I have tried your solutions but none of them worked out ,thanks for your advice anyway

Thanks for your answer,I had delete the game and try to install again,I will try these methods and give you the result soon