After attempting to link my Xbox account to my Battle.net account, I am now unable to log into the Battle.net launcher. The issue appears during the login process, where the browser redirects to a broken URL.
This fails to complete the login, as localhost:0 is not a valid redirect URI. The launcher hangs in a state where it cannot proceed, and the user remains logged out.
Tested on two different Windows PCs and a Mac – exact same issue on all platforms.
Logged in successfully via browser; credentials accepted every time.
But always redirected to localhost:0, which is unreachable and prevents OAuth completion.
Unlinked Xbox account, reinstalled the Battle.net launcher completely.
Cleared cache, changed language, cleared cookies, tried incognito mode, switched networks, and used different browsers.
Other users are reporting the same issue on Blizzard forums as of 21/06/25, suggesting a wider regression or newly introduced bug.
5 Likes
I have exactly the same problem. I also tried to connect my Xbox account to BattleNet. And after logging into the BattleNet app (PC), the browser opens and tries to reach a localhost URL.
1 Like
At first I thought it might have been a DNS problem, but by the looks it is more likely the app.
I guess we can’t link Battle.net to Xbox today 
From Windows Desktop Client Log:
I 2025-06-21 15:19:27.332860 [UnifiedAuth] {Main} UAuth: setting url: https://account.battle.net/login/en/logout?ref=https://account.battle.net/login/en/login.app?app=app reason: reset from external challenge
D 2025-06-21 15:19:27.335460 [UnifiedAuth] {Main} UAuth: browser state changed: None
I 2025-06-21 15:19:27.342523 [UnifiedAuth] {Main} UAuth: setting url: https://account.battle.net/creation/completion?theme=app&fields=&hideLegal=true&app=app-xbl&loc=en-GB&externalChallenge=legal&r=http://localhost:0/?ST%3DEU-REDACTED%26flowTrackingId%3D%26region%3DEU%26accountNameEMAIL_ADDRESS&patch-type=xbox-data-sharing-optin&ST=AUTH_TOKEN&STT=enc&info= reason: external challenge
same problem here allready spoke with xbox support and only blizz can do something with this now 
Same problem tried to ask customer support and no help whatsoever does anyone know a fix
J’ai trouvé un semblant de solution.
Quand vous êtes devant dans la page de connexion cliquez sur l’icone paramètres et sélectionnez : " Continuer sans me connecter"
Vous aurez accès au launcher qui reconnaîtra vos jeux.
Lancez un jeu (ici Overwatch) et connectez vous dans le jeu pour avoir accès aux serveurs.
Vous ne serez toujours pas connecter sur Battle Net mais vous pourrez jouer
On login page go to settings and click “continue without log in” then lauch a game and log in game to acces servers. You still cant log in Battle net app but at least you can play that way
2 Likes
Same issue here ,connected my xbox account , and now the battlenet PC launcher can not connect.
I type my password , then i have a message about the Update on shared data for account linked to Xbox network ,i click continue and a localhost page try to open on my browser (which doesn’t work) but the login attempt does nothing.
1 Like
Same issue. Connected xbox account now i get the the error. Nothing more frustating when this happens… reinstalled nothing works
Same issue, hopefully they’ll solve this fast.
Guys i just told you a little “fix” to play already installed games
Had this same issue since about 2PM today. Tried just about everything suggested in the forums. Submitted a ticket and sadly got a generic reply redirecting me to the very same forums to seek help. Mildly frustrating. The only thing i wasn’t able to do was try another network to see if that’s where the fault lies.
+1… Linked the Xbox Gamepass account and lost access to the Battle.net, redirects to a localhost:0
1 Like
ich habe genau das gleiche problem und das schon seit mehreren stunden
same issue here
hope there will be a fix soon
Same issue here. We also need to request a reset to the 90 days counter in order to reconnect our XBOX Game Pass accounts.
It is surely on Blizzard’s ends since I attempted to play from a non-firewalled laptop as well as NVIDIA cloud.
1 Like
same issue here. starting the app without logging in is a temp solution but is guess i can’t get games from gamepass on it in the meantime.
Apologies if I missed it, but has Blizzard acknowledged the issue on any other thread?
Thank you in advance.
Dimitris
Experiencing exactly the same issue
Same problem here. i never had gamepass and suddently this problem gotta be relevant today
I just wanted to test Microsoft’s Game Pass. So far so bad. I created a support ticket now (on Blizzard’s side) and even provided a link to this site. Let’s see, if that does something.
1 Like