I did all the things from battlenet support article
" 1. [Reset your network devices] to make sure your router hasn’t become flooded with data.
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If you’re using a wireless connection, [optimize your internet connection] to rule out a connection issue.
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[Update your drivers and operating system] to resolve any compatibility issues.
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[Release and renew your IP and flush your DNS] to resolve any network conflicts.
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[Close all other applications]to resolve software conflicts and free up resources.
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[Delete the Battle.net Tools folder] to automatically rebuild outdated or corrupt files."
also reinstalled app and still have loop
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I have the exact same issue. Blizzard please fix.
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Same issue.
The security page “account battle net/security#recent-activity” shows a successful login from the launcher but the launcher itself keeps spinning.
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just got this error code
BLZBNTBGS80000011 (521)
Same problem here. Logo just keeps spinning.
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same problem here and got the same issue
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Hi !
Do you have the X-Box app installed on your computer?
Did a network trace and found a connection to the app…it trys to sync some data and it fails.
Anyway - go to you xbox app → settings → extensions → disable the Battle.net extension
Launcher opened for me afterwards
i have xbox app but don’t have this extension in my settings 
system
(system)
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