Dotcom-Monitor applies error codes based on the type of error.
Below is a comprehensive overview of the error codes included in a table with descriptions in the links.
Additionally, our glossary for HTTP status codes can explain references of HTTP Error Codes further.
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Error types
Error type Type number Validation 200 Runtime 201 Certificate 203 Cryptographic 204 TCP 205 DNS 206 UDP 207 HTTP 208 FTP 209 SFTP 210 SMTP 211 POP3 212 IMAP 213 ICMP 214 ICMPv6 215 DNSBL 216 Media 217 SIP 218 ActiveSync219
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Error codes
Type
Error Code
Description (Reason)
200 100 Invalid URL. 200 101 Invalid Host. 200 102 The file size exceeds the allowed limit. 200 103 One or more files not found. 200 104 Can’t process this Record Type. 200 105 Invalid header format. 200 106 Sorry, Internal Error. 200 107 Response size is greater than max. size. 200 108 Max. redirect attempts arrived. 200 109 Script compilation error. 200 110 DNS Timeout. 200 111 Minimum threshold is reached. 200 112 Maximum threshold is reached. 200 120 Element not found. 200 121 Assert failed. 200 122 Unknown error. 200 123 The operation was canceled. 200 124 Script execute timeout has expired. 200 125 Custom script error. 200 300 Task maximum timeout expired. 200 350 Test message not found. 200 351 Mail message timeout expired. 200 360 Wrong result. 200 400 Keyword not found. 200 401 Syntax error in keyword expression. 200 402 Syntax error in DNS expression(s). 200 450 IP found. 200 470 Frame Rate greater than permissible max. 200 471 Frame Rate less than permissible min. 200 480 Hit count greater than permissible max. 200 481 Hit count less than permissible min. 200 482 Average time greater than permissible max. 200 490 Navigating logic has been changed since Device creation. 200 491 Image not found. 201 100 Runtime exception. 201 101 Script execution error. 201 102 Network error. 201 103 Parameter calculation error. 201 104 Cookie calculation error. 201 105 Header calculation error. 201 106 Url calculation error. 201 107 Before-execute script execution error. 201 115 Counter value is not available. 201 116 Counter initialization failure. 201 117 Remote computer connection error. 201 200 Unknown Error. 203 41 0xC00D0029: The network connection has failed. 203 100 Certificate could not be validated. 203 101 Certificate Date validation fault. 203 102 Certificate Revocation validation fault. 203 103 Certificate Authority validation fault. 203 104 Certificate CN validation fault. 203 105 Certificate Usage validation fault. 203 106 Certificate will expire soon. 204 100 Authenticate failed. 204 101 Can not find supported authenticate algorithm. 204 102 Secure protocol negotiation failed. 205 10051 A socket operation was attempted to an unreachable network. 205 10052 The connection has been broken due to keep-alive activity detecting a failure while the operation was in progress. 205 10054 An existing connection was forcibly closed by the remote host. 205 10060 A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. 205 10061 No connection could be made because the target machine actively refused it. 205 10065 A socket operation was attempted to an unreachable host. 205 12500 An unexpected error occurred on a send. 205 12501 An unexpected error occurred on a receive. 205 12502 Pipeline failure. 205 12503 The name resolver service could not resolve the proxy host name. 205 12504 This request was not permitted by the proxy. 205 12505 No data received. 206 100 Unknown DNS error. 206 101 Format error – The name server was unable to interpret the query. 206 102 Server failure – The name server was unable to process this query due to a problem with the name server. 206 103 Name Error – Meaningful only for responses from an authoritative name server, this code signifies that the domain name referenced in the query does not exist. 206 104 Not Implemented – The name server does not support the requested kind of query. 206 105 Refused – The name server refuses to perform the specified operation for policy reasons. 206 1000 Unknown error. 206 1001 Incorrect replay syntax. 206 1002 Receive timeout. 206 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 206 1004 An unexpected end symbols. 206 1005 An unexpected protocol error occurred. 206 1009 Operation timeout. 206 12007 The host name could not be resolved. 207 1000 Unknown error. 207 1001 Incorrect replay syntax. 207 1002 Receive timeout. 207 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 207 1004 An unexpected end symbols. 207 1005 An unexpected protocol error occurred. 207 1009 Operation timeout. 207 10052 The connection has been broken due to keep-alive activity detecting a failure while the operation was in progress 207 10054 An existing connection was forcibly closed by the remote host 207 12500 An unexpected error occurred on a send. 207 12501 An unexpected error occurred on a receive. 207 12503 The name resolver service could not resolve the proxy host name. 207 12504 This request was not permitted by the proxy. 207 12505 No data received. 208 0 Unknown error. 208 302 Unknown error. 208 400 Bad Request. The request cannot be fulfilled due to bad syntax. 208 401 Unauthorized. Authentication is possible but has failed or not yet been provided. 208 403 Forbidden. The request was a legal request, but the server is refusing to respond to it. 208 404 Not Found. The requested resource could not be found. 208 405 Method Not Allowed. A request was made of a resource using a request method not supported by that resource. 208 406 Not Acceptable. The requested resource is only capable of generating content not acceptable according to the Accept headers sent in the request. 208 408 Request Timeout. The server timed out waiting for the request. 208 409 Conflict. Indicates that the request could not be processed because of conflict in the request, such as an edit conflict. 208 410 Gone: Indicates that the resource requested is no longer available and will not be available again. 208 411 Length Required. The request did not specify the length of its content, which is required by the requested resource. 208 412 Precondition Failed. The server does not meet one of the preconditions that the requester put on the request. 208 413 Request Entity Too Large. The request is larger than the server is willing or able to process. 208 414 Request-URI Too Long. The URI provided was too long for the server to process. 208 415 Unsupported Media Type. The request entity has a media type which the server or resource does not support. 208 416 Requested Range Not Satisfiable. The client has asked for a portion of the file, but the server cannot supply that portion. 208 417 Expectation Failed. The server cannot meet the requirements of the Expect request-header field. 208 418 Unknown client error. 208 420 Unknown client error. 208 421 Unknown client error. 208 422 Unprocessable Entity. The request was well-formed but was unable to be followed due to semantic errors. 208 429 Unknown client error. 208 440 Unknown client error. 208 446 Unknown client error. 208 451 Unknown client error. 208 484 Unknown client error. 208 499 Unknown client error. 208 500 Internal Server Error. A generic error message, given when no more specific message is suitable. 208 501 Not Implemented. The server either does not recognize the request method, or it lacks the ability to fulfill the request. 208 502 Bad Gateway. The server was acting as a gateway or proxy and received an invalid response from the upstream server. 208 503 Service Unavailable. The server is currently unavailable (because it is overloaded or down for maintenance). 208 504 Gateway Timeout. The server was acting as a gateway or proxy and did not receive a timely response from the upstream server. 208 505 HTTP Version Not Supported. The server does not support the HTTP protocol version used in the request. 208 506 Variant Also Negotiates. Transparent content negotiation for the request results in a circular reference. 208 507 Insufficient Storage. 208 508 Unknown server error. 208 510 Not Extended. Further extensions to the request are required for the server to fulfill it. 208 511 Unknown server error. 208 520 Unknown server error. 208 521 Unknown server error. 208 550 Unknown server error. 208 1000 Unknown error. 208 1001 Incorrect replay syntax. 208 1002 Receive timeout. 208 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 208 1004 An unexpected end symbols. 208 1005 An unexpected protocol error occurred. 208 1006 Server protocol violation. 208 1007 The request was not permitted by the cache policy. In general, this occurs when a request is not cacheable and the effective policy prohibits sending the request to the server. 208 1009 Operation timeout. 208 10060 The operation timed out 208 12002 The operation timed out. 208 12029 A connection with the server could not be established. 208 12030 The connection with the server was terminated abnormally. 208 12031 The connection with the server was reset. 208 12152 The server returned an invalid or unrecognized response. 209 421 Service not available, closing control connection. This may be a reply to any command if the service knows it must shut down. 209 425 Can’t open data connection. 209 426 Connection closed; transfer aborted. 209 450 Requested file action not taken. 209 451 Requested action aborted. Local error in processing. 209 500 Syntax error, command unrecognized. This may include errors such as command line too long. 209 501 Syntax error in parameters or arguments. 209 502 Command not implemented. 209 530 Not logged in. 209 532 Need account for storing files. 209 534 Unknown permanent authentication or accounting error. 209 550 Requested action not taken. File unavailable. 209 1000 Unknown error. 209 1001 Incorrect replay syntax. 209 1002 Receive timeout. 209 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 209 1004 An unexpected end symbols. 209 1005 An unexpected protocol error occurred. 209 1008 No server request for data channel creation. 209 1009 Operation timeout. 210 102 Recursive directory use. 210 103 Bad Directory. 210 104 Bad remote Directory. 210 105 No such directory. 210 106 Error opening communication channel. 210 107 Input stream is closed. 210 108 Bad response status. 210 109 Connection is down. 210 110 Channel is not opened. 210 111 Failed to send subsystem request. 210 112 Bad remote port. 210 113 Syntax error. 210 118 Accessible fault. 210 119 Verify fault. 210 120 Invalid data. 210 121 Invalid protocol. 210 122 Failed to resume. 210 123 Not Supported. 210 1000 Unknown error. 210 1001 Incorrect replay syntax. 210 1002 Receive timeout. 210 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 210 1004 An unexpected end symbols. 210 1005 An unexpected protocol error occurred. 210 1009 Operation timeout. 211 400 Unknown temporary syntax error. 211 401 Unknown temporary syntax error. 211 404 Unknown temporary syntax error. 211 420 Unknown temporary connection error. 211 421 Service not available, closing transmission channel. 211 435 Unknown temporary error. 211 450 Requested mail action not taken. Mailbox unavailable. 211 451 Requested action aborted. Local error in processing. 211 452 Requested action not taken. Insufficient system storage. 211 454 Unknown temporary error. 211 475 Unknown temporary error. 211 476 Unknown temporary error. 211 500 Syntax error, command unrecognized. 211 501 Syntax error in parameters or arguments. 211 502 Command not implemented. 211 503 Bad sequence of commands. 211 504 Command parameter not implemented. 211 513 Unknown permanent information error. 211 530 Access denied. 211 535 Unknown permanent error. 211 542 Unknown permanent error. 211 550 Requested action not taken: mailbox unavailable. 211 551 User not local. 211 552 Requested mail action aborted: exceeded storage allocation. 211 553 Requested action not taken: mailbox name not allowed. 211 554 Transaction failed. 211 555 MAIL FROM/RCPT TO parameters not recognized or not implemented. 211 556 Unknown permanent error. 211 571 Unknown permanent error. 211 1000 Unknown error. 211 1001 Incorrect replay syntax. 211 1002 Receive timeout. 211 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 211 1004 An unexpected end symbols. 211 1005 An unexpected protocol error occurred. 211 1009 Operation timeout. 212 400 Error on command CAPA. 212 401 Error on command AUTH. 212 402 Error on command STLS. 212 403 Error on command USER. 212 404 Error on command PASS. 212 405 Error on command STAT. 212 406 Error on command TOP. 212 407 Error on command DELE. 212 408 Error on command QUIT. 212 1000 Unknown error. 212 1001 Incorrect replay syntax. 212 1002 Receive timeout. 212 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 212 1004 An unexpected end symbols. 212 1005 An unexpected protocol error occurred. 212 1009 Operation timeout. 213 400 Error on command CAPABILITY. 213 401 Error on command AUTHENTICATE. 213 402 Error on command LOGIN. 213 403 Error on command STARTTLS. 213 404 Error on command SELECT INBOX. 213 405 Error on command UID SEARCH. 213 406 Error on command UID STORE. 213 407 Error on command LOGOUT. 213 1000 Unknown error. 213 1001 Incorrect replay syntax. 213 1002 Receive timeout. 213 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 213 1004 An unexpected end symbols. 213 1005 An unexpected protocol error occurred. 213 1009 Operation timeout. 214 402 Network that contains the destination computer is not reachable. 214 403 Destination computer is not reachable. 214 404 Contact with the destination computer is administratively prohibited. 214 405 Destination Port Unreachable. 214 406 Insufficient network resources. 214 407 Invalid option. 214 408 Hardware error. 214 409 Packet containing the request is larger than the maximum transmission unit (MTU) of a node (router or gateway) located between the source and destination. 214 410 Request timeout. 214 412 There is no valid route between the source and destination computers. 214 413 Time to Live (TTL) value reached zero, causing the forwarding node (router or gateway) to discard the packet. 214 414 Packet was divided into fragments for transmission and all of the fragments were not received within the time allotted for reassembly. 214 415 Node (router or gateway) encountered problems while processing the packet header. 214 416 Packet was discarded. 214 418 Destination IP address cannot receive ICMP echo requests or should never appear in the destination address field of any IP datagram. 214 440 Destination Unreachable. 214 441 Time to Live (TTL) value reached zero, causing the forwarding node (router or gateway) to discard the packet. 214 442 Bad Header. 214 443 Unrecognized Next Header. 214 444 ICMP protocol error. 214 445 Source address and destination address that are specified in an ICMP echo message are not in the same scope. 214 1000 Unknown error. 214 1001 Incorrect replay syntax. 214 1002 Receive timeout. 214 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 214 1004 An unexpected end symbols. 214 1005 An unexpected protocol error occurred. 214 1009 Operation timeout. 215 402 Network that contains the destination computer is not reachable. 215 403 Destination computer is not reachable. 215 404 Contact with the destination computer is administratively prohibited. 215 405 Destination Port Unreachable. 215 406 Insufficient network resources. 215 407 Invalid option. 215 408 Hardware error. 215 409 Packet containing the request is larger than the maximum transmission unit (MTU) of a node (router or gateway) located between the source and destination. 215 410 Request timeout. 215 412 There is no valid route between the source and destination computers. 215 413 Time to Live (TTL) value reached zero, causing the forwarding node (router or gateway) to discard the packet. 215 414 Packet was divided into fragments for transmission and all of the fragments were not received within the time allotted for reassembly. 215 415 Node (router or gateway) encountered problems while processing the packet header. 215 416 Packet was discarded. 215 418 Destination IP address cannot receive ICMP echo requests or should never appear in the destination address field of any IP datagram. 215 440 Destination Unreachable. 215 441 Time to Live (TTL) value reached zero, causing the forwarding node (router or gateway) to discard the packet. 215 442 Bad Header. 215 443 Unrecognized Next Header. 215 444 ICMP protocol error. 215 445 Source address and destination address that are specified in an ICMP echo message are not in the same scope. 215 1000 Unknown error. 215 1001 Incorrect replay syntax. 215 1002 Receive timeout. 215 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 215 1004 An unexpected end symbols. 215 1005 An unexpected protocol error occurred. 215 1009 Operation timeout. 216 1000 Unknown error. 216 1001 Incorrect replay syntax. 216 1002 Receive timeout. 216 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 216 1004 An unexpected end symbols. 216 1005 An unexpected protocol error occurred. 216 1009 Operation timeout. 217 6 Unable to establish a connection to the server. Native error code: ‘0xC00D0006’. 217 19 The server, a computer set up to offer multimedia content to other computers, could not handle your request for multimedia content in a timely manner. Please try again later. Native error code: ‘0xC00D0013’. 217 26 The system cannot find the file specified. Native error code: ‘0xC00D001A’. 217 38 The specified protocol is not recognized. Be sure that the file name and syntax, such as slashes, are correct for the protocol. Native error code: ‘0xC00D0026’. 217 41 The network connection has failed. 217 51 There is no stream available. Native error code: ‘0xC00D0033’. 217 53 The specified server could not be found. Native error code: ‘0xC00D0035’. 217 64 The specified network name is no longer available 217 1000 Unknown error. 217 1001 Incorrect replay syntax. 217 1002 Receive timeout. 217 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 217 1004 An unexpected end symbols. 217 1005 An unexpected protocol error occurred. 217 1009 Operation timeout. 217 12000 The specified protocol is not supported. Native error code: ‘0xC00D2EE0’. 217 12002 The server encountered an unexpected condition which prevented it from fulfilling the request. Native error code: ‘0xC00D2EE2’. 217 12004 The proxy experienced an error while attempting to contact the media server. Native error code: ‘0xC00D2EE4’. 217 12006 The server is currently unable to handle the request due to a temporary overloading or maintenance of the server. Native error code: ‘0xC00D2EE6’. 217 12007 The server is refusing to fulfill the requested operation. Native error code: ‘0xC00D2EE7’. 217 12026 The MMS protocol is not supported. Please use HTTP or RTSP to connect to the Windows Media stream. Native error code: ‘0xC00D2EFA’. 217 12038 It was not possible to establish a connection to the media server in a timely manner. The media server may be down for maintenance, or it may be necessary to use a proxy server to access this media server. Native error code: ‘0xC00D2F06’. 218 400 Bad Request. 218 401 Unauthorized (Used only by registrars or user agents. Proxies should use proxy authorization 407). 218 402 Payment Required (Reserved for future use). 218 403 Forbidden. 218 404 Not Found (User not found). 218 407 Proxy Authentication Required. 218 408 Request Timeout (Couldn’t find the user in time). 218 410 Gone (The user existed once, but is not available here any more.). 218 415 Unsupported Media Type. 218 477 Unknown client error. 218 480 Temporarily Unavailable. 218 482 Loop Detected. 218 484 Address Incomplete. 218 485 The callee address provided in the request was ambiguous. 218 487 Request Terminated. 218 488 Not Acceptable Here. 218 491 Request Pending. 218 500 Server Internal Error. 218 501 Not Implemented: The SIP request method is not implemented here. 218 503 Service Unavailable. 218 504 Server Time-out. 218 603 The callee’s machine was successfully contacted but the user explicitly does not wish to or cannot participate. 218 604 Does Not Exist Anywhere. 218 606 Not Acceptable. 218 620 Unknown global error. 218 1000 Unknown error. 218 1001 Incorrect replay syntax. 218 1002 Receive timeout. 218 1003 A message was received that exceeded the specified limit when sending a request or receiving a response from the server. 218 1004 An unexpected end symbols. 218 1005 An unexpected protocol error occurred. 218 1009 Operation timeout. 219 399 Server does not support necessary command’s set. 219 400 Infinite redirection loop. 219 401 Invalid Policy Key. 219 402 Inbox not found in hierarchy. 219 403 Empty sync request was returned. 219 404 Invalid options response. 219 405 Error during Provision command execution. 219 406 Error during SendMail command execution. 219 407 Error during FolderSync command execution. 219 408 Error during Sync command execution. 219 409 Error during Sync command execution.