Game cannot be launched because the operating system wouldn't allow the system to write to registry.

Information on error BLZBNTBTS0000000B

Troubleshooting reports about spam friend requests

Information on error BLZBNTAGT00000844

Information on troubleshooting connection and installation issues using another network.

Troubleshooting steps to link PayPal to the Battle.net account

What to do if you have lost access to your Blizzard Data File.

Cannot quit a D3 clan or give the leadership to another person

It is not possible to move a Call of Duty account to another Battle.net account

Information on error BLZBNTBTS0000000A