Battle.net Desktop App Certificate Update

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Our recent update to the Blizzard Battle.net desktop app made sure players could properly use features like logging in to Battle.net via a social network, or joining a Blizzard group via an invite link. To facilitate these features, we updated the local webserver to use a self-signed certificate to be consistent with current industry security standards.

For those interested in more detail, using these features requires your web browser to communicate with the Blizzard Battle.net desktop app. Previously, the desktop app used a certificate signed by a public Certificate Authority, meaning that no modifications to your system certificates were necessary; however, this technique is incompatible with Certificate Authority policies and we can no longer use it.

While some browsers such as Chrome and Firefox are equipped to handle browser-to-app communication techniques, the changes were necessary for other browsers. For the time being, the desktop app generates a self-signed certificate that’s unique to your machine and configures your system to trust it.

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