Codes and error messages for MSN Messenger

IM_e_connect
0x81000301
The Winsock layer could not establish a connection.

IM_e_invalid_server_name
0x81000302
Reserved for future use.

IM_e_invalid_password
0x81000303
The password provided by the user is invalid.

IM_e_already_logged_on
0x81000304
The local client is already connected to a server.

IM_e_server_version
0x81000305
The server version is incompatible with the local version of the client.

IM_e_logon_timeout
0x81000306
The logon attempt ended after 15 seconds.

IM_e_list_full
0x81000307
There are too many contacts in a list.

IM_e_ai_reject
0x81000308
Contact has rejected an invitation from Microsoft NetMeeting ®.

IM_e_ai_reject_not_inst
0x81000309
A remote client has rejected an invitation from NetMeeting 3.01 because it does not exist on the user's computer remote.

IM_e_user_not_found
0x8100030A
The server cannot find the user requested. This may be because the user does not exist, that the username is invalid, or adding a user has failed server side.

IM_e_already_in_list
0x8100030B
The local client has tried to add a user to a list, but the user name already exists in the contact list.

IM_e_disconnected
0x8100030C
The local client released.

IM_e_unexpected
0x8100030D
The server returned an unexpected error code.

IM_e_server_too_busy
0x8100030E
Either the server no longer accepts the request, it is no longer accepting new connections.

IM_e_invalid_auth_packages
0x8100030F
No authentication mechanism has been negotiated, or it has not been initialized.

IM_e_newer_client_available
0x81000310
At the opening session, the server sends a message that a new client version is available.

IM_e_ai_timeout
0x81000311
A customer at a distance has not responded to an invitation of application and the request for invitation has expired due to the local client level.

IM_e_cancel
0x81000312
The local client canceled a tentative opening.

IM_e_too_many_matches
0x81000313
Reserved for future use.

IM_e_server_unavailable
0x81000314
The server was contacted but was unavailable for unspecified reasons.

IM_e_logon_ui_active
0x81000315
Reserved for future use.

IM_e_option_ui_active
0x81000316
Reserved for future use.

IM_e_contact_ui_active
0x81000317
Reserved for future use.

IM_e_logged_on
0x81000319
The client has connected. This is returned in cases where the client should be offline.

IM_e_connect_proxy
0x8100031A
Reserved for future use.

IM_e_proxy_auth
0x8100031B
Reserved for future use.

IM_e_proxy_auth_type
0x810003Ç
Reserved for future use.

IM_e_invalid_proxy_name
0x8100031D
Reserved for future use.

IM_e_not_primary_service
0x81000320
Reserved for future use.

IM_e_too_many_sessions
0x81000321
Reserved for future use.

IM_e_too_many_messages
0x81000322
Reserved for future use.

IM_e_remote_login
0x81000323
Reserved for future use.

IM_e_invalid_friendly_name
0x81000324
Reserved for future use.

IM_e_session_full
0x81000325
Reserved for future use.

IM_e_not_allowing_new_users
0x81000326
Reserved for future use.

IM_e_invalid_domain
0x81000327
Reserved for future use.

IM_e_tcp_error
0x81000328
Reserved for future use.

IM_e_session_timeout
0x81000329
Reserved for future use.

IM_e_multipoint_session_begin_timeout
0x8100030
Reserved for future use.

IM_e_multipoint_session_end_timeout
0x8100032b
Reserved for future use.

IM_e_reverse_list_full
0x8100032c
Reserved for future use.

IM_e_server_error
0x8100032d
The server encountered an error.

IM_e_system_config
0x8100032e
A library has not been found.

IM_e_no_directory
0x8100032f
Reserved for future use.

IM_e_user_canceled_logon
0x81000350
The user has canceled open dialog.

IM_s_logged_on
0x01000319
The user is already connected.

IM_s_already_in_the_mode
0x01000301
The method of setting that was already requested.