Error Code (0x409) 80080300

Hi I just had this issue and fixed it, for me, I unlinked my Microsoft and PC account, in the settings, where you can see the account picture, click sign in locally, that will in link your Microsoft account, once that is done you will have to sign in again,
and go to the same menu, go to email and app accounts, and click remove, once that is done, no apps under Microsoft should be linked to your account, and then for me I directly clicked to start up halo wars, it prompted me to log in, once I logged in, the
game started up. Hope this helps, I did not see this anywhere

The methods below didnt work.

The Xbox App still giving the error message: "It's not possible to connect now. Try again later" Error Code: (0x409) 0x80080300

Hey there Rex!

Go ahead and try the following steps:

a) Press the ‘Windows + R’ key on the keyboard.

b) In the ‘Run’ window type ’MSCONFIG’ and click ‘Ok’.

c) On the ‘General’ tab, click the ‘Normal Startup’ option,
and then click ‘OK’.

d) When you are prompted to restart the computer, click ‘Restart’.

Hopefully that helps and makes it so you can open up the Xbox app.

Let us know if not and we'll try something else!

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Maybe this

Thread will help you.

I have the same error and tried the method, reinstalled the app and still have the same(0x409) 0xD000000D error