I try to search and add new user from domain in SDL Web 8. I got below error:
(80040356) Unable to list users from "" This request operation sent to net.tcp://localhost:2660/CoreService/201501/netTcp did not receive a reply within the configured timeout (00:10:00). The time allotted to this operation may have been a portion of a longer timeout. This may be because the This request operation sent to net.tcp://localhost:2660/CoreService/201501/netTcp did not receive a reply within the configured timeout (00:10:00). The time allotted to this operation may have been a portion of a longer timeout. This may be because the service is still processing the operation or because the service was unable to send a reply message. Please consider increasing the operation timeout (by casting the channel/proxy to IContextChannel and setting the OperationTimeout property) and ensure that the service is able to connect to the client.