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Common problemBlizzard Battle.netWindows PC and Mac
Battle.net app won't open
Nothing happens when you start the app
You start the Battle.net app and nothing opens, with no error message. Blizzard points to old drivers, security software and Windows permissions.
How to fix it
Update your drivers.
Add Blizzard apps to your security software's exception list.
Try a new administrator account to rule out permission problems.
Close other programs and run a malware scan.
Turn off any proxy, then uninstall and reinstall the Battle.net app.
From Blizzard Battle.net's help pages: us.support.blizzard.com, in our words. Checked on 5 November 2026. If the steps do not help, Blizzard Battle.net's own support is the next stop.
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