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OPERATIONAL DEFECT DATABASE
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The latest releases of Horizon Client include enhanced messaging in relation to connectivity issues encountered when connecting to a Horizon environment.This article serves as a landing page for the various error types with steps and guidance to resolve each specific error code.This supplements the existing error codes which are valid and present in each edition of Horizon. These are documented here: Horizon Blast Disconnect Codes (87457) Interface Improvements: The Horizon Windows client will display an enhanced error message with a more detailed explanation in terms of possible causes from 2303. This Interface improvement has been extended to Horizon Mac and Linux Clients from 2306. Sample Screenshot: Logging Improvements: Horizon Client logs and Horizon MKS logs, with the latest cross-platform client release, contain a keyword Blast_Connect_Failure_Alert to aid in expedited failure diagnosis. Log Location: Location of Horizon (VDM) log files (1027744) Sample Log Lines: vmware-mks-<pid>.log 2023-01-18T19:22:36.661Z In(05) blastSocket [BlastSocketClient] BlastSocketClientConnectFailureAlert: Could not connect to Desktop. 2023-01-18T19:22:36.661Z In(05)+ blastSocket Blast_Connect_Failure_Alert: Reason: VDPCONNECT_CONN_TIMEDOUT (33) 2023-01-18T19:22:36.661Z In(05)+ blastSocket Blast_Connect_Failure_Alert: host: IP port: 22443 httpProxy:null fqdn:null 2023-01-18T19:22:36.661Z In(05)+ blastSocket Blast_Connect_Failure_Alert: error: 6 detailed: 10060 httpStatus: 0 ClientContext:2C79C723260 vmware-horizon-viewclient-<nnn>.txt 2023-01-18T11:22:36.662-08:00 WARN (01) [libsdk] : RMKSWindow::OnConnectionStateChanged:2346: Blast_Connect_Failure_Alert: (216A2509820) disconnected with VDPCONNECT_CONN_TIMEDOUT error: 'VDPCONNECT_CONN_TIMEDOUT: The connection to the gateway or the remote computer could not be established in a reasonable time period. This could be because the gateway or the remote computer is not reachable, not responding, or the protocol service port is blocked by a firewall. If the issue persists, please contact your system administrator.'
Please find an index of several codes below grouped by error type to assist with on-site diagnosis.
Route Availability Issues: Client Error MessageTroubleshooting Guidance"VDPCONNECT_HOST_UNREACHABLE: The local computer is unable to reach the gateway or the remote computer while attempting a connection. This could be because the gateway or the remote computer is down or not responding. If the issue persists, please contact your system administrator."Horizon Client Blast Error Troubleshooting: VDPCONNECT_HOST_UNREACHABLE (91015) "VDPCONNECT_HOSTNAME_NOT_RESOLVABLE: The gateway or the remote computer IP address could not be resolved for establishing a connection. This could be due to a DNS issue. If the issue persists, please contact your system administrator."Horizon Client Blast Error Troubleshooting: VDPCONNECT_HOSTNAME_NOT_RESOLVABLE (91028)"VDPCONNECT_NETWORK_UNREACHABLE: The local computer is unable to reach the gateway or the remote computer's network while attempting a connection. This could be due to a network routing issue. If the issue persists, please contact your system administrator."Horizon Client Blast Error Troubleshooting: VDPCONNECT_NETWORK_UNREACHABLE (91029) Connection Negotiation Issues: Client Error MessageTroubleshooting Guidance"VDPCONNECT_CONN_TIMEDOUT: The connection to the gateway or the remote computer could not be established in a reasonable time period. This could be because the gateway or the remote computer is not reachable, not responding, or the protocol service port is blocked by a firewall. If the issue persists, please contact your system administrator."Horizon Client Blast Error Troubleshooting: VDPCONNECT_CONN_TIMEDOUT (91019)"VDPCONNECT_CONN_REFUSED: The connection to the gateway or the remote computer was refused. This could be because the protocol service is not running or the protocol service port is blocked by a firewall. If the issue persists, please contact your system administrator."Horizon Client Blast Error Troubleshooting: VDPCONNECT_CONN_REFUSED(91020)"VDPCONNECT_CONNECT_TLS: The connection to the gateway or the remote computer could not be established because of a TLS error. This could be due to a TLS handshake failure, a certificate check failure or other related errors. If the issue persists, please contact your system administrator."Horizon Client Blast Error Troubleshooting: VDPCONNECT_CONNECT_TLS (91018)"VDPCONNECT_CONN_ACCESS_DENIED: The connection to the gateway or the remote computer was denied access, perhaps by the local host firewall. If the issue persists, please contact your system administrator."Horizon Client Blast Error Troubleshooting: VDPCONNECT_CONN_ACCESS_DENIED (91030) "VDPCONNECT_CONN_TERMINATED: The connection to the gateway or the remote computer was terminated by the local host networking software. If the issue persists, please contact your system administrator." Horizon Client Blast Error Troubleshooting: VDPCONNECT_CONN_TERMINATED (91031 )"VDPCONNECT_CONN_RESET: The connection to the gateway or the remote computer was reset by the remote host. If the issue persists, please contact your system administrator.".Horizon Client Blast Error Troubleshooting: VDPCONNECT_CONN_RESET (91179)"VDPCONNECT_REJECTED: The connection to the remote computer has been refused."Horizon Client Blast Error Troubleshooting: VDPCONNECT_REJECTED (91182) Gateway Issues: Client Error MessageTroubleshooting Guidance"VDPCONNECT_GATEWAY_ERROR: The connection to the remote computer encountered a gateway error. This could be because the agent is not reachable from the gateway or the protocol service port is blocked by a firewall. If the issue persists, please contact your system administrator."Horizon Client Blast Error Troubleshooting: VDPCONNECT_GATEWAY_ERROR (91017) "VDPCONNECT_GATEWAY_TIMEOUT: The connection to the remote computer encountered a gateway timeout. The gateway could not reach the agent or its connection to the agent was refused because the protocol service is not running or the protocol service port is blocked by a firewall. If the issue persists, please contact your system administrator." Horizon Client Blast Error Troubleshooting: VDPCONNECT_GATEWAY_TIMEOUT (91016) Peer Issues: Client Error MessageTroubleshooting Guidance"VDPCONNECT_PEER_UNAVAILABLE: The connection encountered an unavailable peer. This could be because a peer computer, such as a proxy, was unable to handle the connection request. If the issue persists, please contact your system administrator."HorizonHorizon Client Blast Error Troubleshooting: VDPCONNECT_PEER_UNAVAILABLE (91180)"VDPCONNECT_PEER_ERROR: The connection encountered a peer error. If the issue persists, please contact your system administrator." Horizon Client Blast Error Troubleshooting: VDPCONNECT_PEER_ERROR (91181) Page last reviewed: October 2023Next review due December 2023
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