![451 4.4 0 primary target ip address responded with 421 4.4 2 connection dropped due to socket error - Microsoft Q&A 451 4.4 0 primary target ip address responded with 421 4.4 2 connection dropped due to socket error - Microsoft Q&A](https://learn-attachment.microsoft.com/api/attachments/91008-image.png?platform=QnA)
451 4.4 0 primary target ip address responded with 421 4.4 2 connection dropped due to socket error - Microsoft Q&A
![java - IOException: failed to connect to /192.168.70.1 (port 9900): connect failed: ETIMEDOUT (Connection timed out) - Stack Overflow java - IOException: failed to connect to /192.168.70.1 (port 9900): connect failed: ETIMEDOUT (Connection timed out) - Stack Overflow](https://i.stack.imgur.com/YDalr.png)
java - IOException: failed to connect to /192.168.70.1 (port 9900): connect failed: ETIMEDOUT (Connection timed out) - Stack Overflow
dial tcp <ip>:8443: connectex: No connection could be made because the target machine actively refused it · Issue #3562 · kubernetes/minikube · GitHub
![java - how to resolve failed to connect to /192.168.15.186 (port 80): connect failed: ETIMEDOUT (Connection timed out) in Windows Firewall - Stack Overflow java - how to resolve failed to connect to /192.168.15.186 (port 80): connect failed: ETIMEDOUT (Connection timed out) in Windows Firewall - Stack Overflow](https://i.stack.imgur.com/uNEh3.png)
java - how to resolve failed to connect to /192.168.15.186 (port 80): connect failed: ETIMEDOUT (Connection timed out) in Windows Firewall - Stack Overflow
The TCP/IP connection to the host mssql/keycloak, port 1433 has failed · Issue #10614 · keycloak/keycloak · GitHub
![Problem] Installation failed. Reason: TCP connectivity failure ( port = 18191 )( IP = 10.1.1.1 )[ error no. 10 ]. ( message from member r65gw01) | A Firewall Engineer Problem] Installation failed. Reason: TCP connectivity failure ( port = 18191 )( IP = 10.1.1.1 )[ error no. 10 ]. ( message from member r65gw01) | A Firewall Engineer](https://firewallengineer.files.wordpress.com/2013/12/error-no-10.png)
Problem] Installation failed. Reason: TCP connectivity failure ( port = 18191 )( IP = 10.1.1.1 )[ error no. 10 ]. ( message from member r65gw01) | A Firewall Engineer
![Guardium LDAP configuration test fails - SSLHandshakeException: Remote host closed connection during handshake Guardium LDAP configuration test fails - SSLHandshakeException: Remote host closed connection during handshake](https://www.ibm.com/support/pages/system/files/support/swg/sectech.nsf/0/0794a319af0e26fc85258133002fcd11/Diagnosis/0.3EE.jpg)
Guardium LDAP configuration test fails - SSLHandshakeException: Remote host closed connection during handshake
TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:2660. - Tridion developer articles and tutorials - Tridion Sites - RWS Community
HTTP error 401 Unauthorized in API call from IFTTT since last update (14863) · Issue #5501 · domoticz/domoticz · GitHub
![Error Domain=GCDAsyncSocketErrorDomain Code=1 "Attempting to connect while connected or accepting connections. Disconnect first." UserInfo={NSLocalizedDescription=Attempting to connect while connected or accepting · Issue #558 · robbiehanson ... Error Domain=GCDAsyncSocketErrorDomain Code=1 "Attempting to connect while connected or accepting connections. Disconnect first." UserInfo={NSLocalizedDescription=Attempting to connect while connected or accepting · Issue #558 · robbiehanson ...](https://user-images.githubusercontent.com/18186467/27861267-ae811fd6-61b2-11e7-91e9-a6db699fb57f.png)