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OPERATIONAL DEFECT DATABASE
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The Blast/Agent log files contain several codes that can assist in the root cause of a session disconnect.This article provides a list of such codes and their description. Please note these error messages have been enhanced with Horizon Client 2303 and later: Troubleshooting guidance is available for unique codes at Enhanced Horizon Blast Error Codes with Horizon Client 2303 and Later (91013) Troubleshooting guidance here is equally applicable for earlier editions of Horizon when the code is seen as a log entry.
VDPConnectionResultClose CodeDescriptionVDPCONNECT_INVALID-1An Invalid close reason, the close reason was not setVDPCONNECT_SUCCESS0Successfully disconnected from the serverVDPCONNECT_FAILURE1Connection failed: a generic failure occurredVDPCONNECT_TIMEOUT2Network timeoutVDPCONNECT_REJECTED3Connection rejectedVDPCONNECT_NETWORK_FAILURE4Network failure: check your network connectionVDPCONNECT_CONNECTION_LOST5Lost connection to the serverVDPCONNECT_SERVER_DISCONNECTED6Disconnected from the remote sessionVDPCONNECT_SERVER_ERROR7Disconnected from the remote session: a generic server errorVDPCONNECT_DISPLAY_NOT_ENOUGH_MEM8Out of memory: try reducing desktop resolutionVDPCONNECT_RESULT_UNSPECIFIED9Disconnected from the remote session: Unspecified reasonVDPCONNECT_SERVER_DISCONNECTED_EXPIRED10Disconnected from the remote session: session expired. The connection to the remote computer timed out and was disconnected.VDPCONNECT_SERVER_DISCONNECTED_MANUAL_LOGOUT11User-initiated disconnect or logoutVDPCONNECT_SERVER_DISCONNECTED_ADMIN_MANUAL12Disconnected from the remote session. Admin has manually disconnected the sessionVDPCONNECT_SERVER_DISCONNECTED_RECONNECT13The connection to the remote computer has been closed due to a new connection requestVDPCONNECT_ENCRYPTION_MISMATCH17Client/server encryption algorithms mismatchVDPCONNECT_SERVER_DISCONNECTED_AES_DISABLED_LOCALLY18If you are connecting via a Security Server, please ensure that AES encryption is enabled on the client. VDPCONNECT_USER_INIT_DISCONNECT23User-initiated the disconnect by closing the clientVDPCONNECT_USER_INIT_DISCONNECTANDLOGOFF24User-initiated the disconnect and logoff from the client menuVDPCONNECT_USER_INIT_RESET25User-initiated desktop reset VDPCONNECT_CLIENT_SHOULD_DISCONNECT26A Generic disconnection, Client should end the sessionVDPCONNECT_GENERIC_LOGOUT27The User logged off the session from the OSVDPCONNECT_SERVER_SHADOW_SESSION_ENDED30The collaboration session has endedVDPCONNECT_DISCONNECT_CRITICAL_PROCESS_TERMINATED43The connection to the remote computer ended due to critical process being terminated