Another solution for BLZBNTBGS80000011

Was having just a ton of problems logging into Battle.Net or the apps, but no issue with the website. Went through all the recommended steps with no results, when it hit me. It turns out Battle.Net uses SHA-1, which most security software turns off. I humbly request developers to use a newer Hash, but in the meanwhile: (After backing up your registry,) removing this key will allow you to log in again…
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Hashes\SHA