The following table shows possible network error values.
| Name | Description | Code |
| NERR_AccountExpired | This user account has expired. | 2239 |
| NERR_AccountUndefined | This user account is undefined. | 2238 |
| NERR_AcctLimitExceeded | A user's session with this server has been deleted because the user's logon hours are no longer valid. | 2434 |
| NERR_ACFFileIOFail | A disk I/O failure occurred. | 2229 |
| NERR_ACFNoParent | The parent directory could not be located. | 2232 |
| NERR_ACFNoRoom | There are too many names in the user accounts database. | 2228 |
| NERR_ACFNotFound | The security database could not be found. | 2219 |
| NERR_ACFNotLoaded | The security database has not been started. | 2227 |
| NERR_ACFTooManyLists | The limit of 64 entries per resource was exceeded. | 2230 |
| NERR_ActiveConns | Active connections still exist. | 2402 |
| NERR_AddForwarded | This message alias has been added but is still forwarded. | 2275 |
| NERR_AlertExists | The specified client is already registered for the specified event. | 2430 |
| NERR_AlreadyExists | This message alias already exists locally. | 2276 |
| NERR_AlreadyForwarded | This message alias has already been forwarded. | 2274 |
| NERR_AlreadyLoggedOn | This workstation is already logged on to the local-area network. | 2200 |
| NERR_BadAsgType | This asg_type is invalid. | 2251 |
| NERR_BadComponent | This path component is invalid. | 2356 |
| NERR_BadControlRecv | The service control dispatcher pipe read failed. | 2193 |
| NERR_BadDest | The destination path is illegal. | 2382 |
| NERR_BadDev | The requested device is invalid. | 2341 |
| NERR_BadDevString | This list of devices is invalid. | 2340 |
| NERR_BadDosFunction | The program below called an unsupported MS-DOS function. | 2502 |
| NERR_BadDosRetCode | The program below returned an MS-DOS error code. | 2500 |
| NERR_BadEventName | The event name is invalid. | 2143 |
| NERR_BadFileCheckSum | The file below is corrupt. | 2504 |
| NERR_BadPassword | The password parameter is invalid. | 2203 |
| NERR_BadPasswordCore | This share name or password is invalid. | 2403 |
| NERR_BadQueueDevString | This device name list is invalid. | 2334 |
| NERR_BadQueuePriority | The queue priority is invalid. | 2335 |
| NERR_BadReceive | The message was sent but not received. | 2282 |
| NERR_BadRecipient | The alert recipient is invalid. | 2433 |
| NERR_BadServiceName | The service name is invalid. | 2185 |
| NERR_BadServiceProgName | The configuration file contains an invalid service program name. | 2188 |
| NERR_BadSource | The source path is illegal. | 2381 |
| NERR_BadTransactConfig | The server is not configured for transactions. | 2141 |
| NERR_BadUasConfig | The user accounts database is not configured correctly. | 2450 |
| NERR_BadUsername | The user name or group name parameter is invalid. | 2202 |
| NERR_BrowserConfiguredToNotRun | The browser service was configured with MaintainServerList=No. | 2550 |
| NERR_BrowserNotStarted | The requested information is not available. | 2139 |
| NERR_BrowserTableIncomplete | The information in the list of servers may be incorrect. | 2319 |
| NERR_BufTooSmall | The API return buffer is too small. | 2123 |
| NERR_CallingRplSrvr | Connecting to the Remoteboot server. | 2515 |
| NERR_CanNotGrowSegment | Unable to add to the security database session cache segment. | 2233 |
| NERR_CanNotGrowUASFile | Unable to add to the user accounts database. | 2456 |
| NERR_CantConnectRplSrvr | Cannot connect to the Remoteboot server. | 2513 |
| NERR_CantOpenImageFile | Cannot open image file on the Remoteboot server. | 2514 |
| NERR_CantType | Could not determine the type of input. | 2357 |
| NERR_CfgCompNotFound | The specified component could not be found in the configuration information. | 2146 |
| NERR_CfgParamNotFound | The specified parameter could not be found in the configuration information. | 2147 |
| NERR_ClientNameNotFound | A session does not exist with that computer name. | 2312 |
| NERR_CommDevInUse | This device is already in use as a communication device. | 2343 |
| NERR_DatabaseUpToDate | No updates are necessary to this replicant network/local security database. | 2248 |
| NERR_DataTypeInvalid | The data type is not supported by the print processor. | 2167 |
| NERR_DCNotFound | Could not find domain controller for this domain. | 243 |
| NERR_DelComputerName | The computer name could not be deleted. | 2278 |
| NERR_DeleteLater | This message alias will be deleted later. | 2298 |
| NERR_DestExists | The printer destination already exists. | 2153 |
| NERR_DestIdle | This printer destination is idle and cannot accept control operations. | 2158 |
| NERR_DestInvalidOp | This printer destination request contains an invalid control function. | 2159 |
| NERR_DestInvalidState | This operation cannot be performed on the print destination in its current state. | 2162 |
| NERR_DestNoRoom | No more printer destinations can be added. | 2157 |
| NERR_DestNotFound | The printer destination cannot be found. | 2152 |
| NERR_DeviceIsShared | This device is currently being shared. | 2252 |
| NERR_DeviceNotShared | This device is not shared. | 2311 |
| NERR_DeviceShareConflict | This device cannot be shared as both a spooled and a nonspooled resource. | 2318 |
| NERR_DevInUse | The device is being accessed by an active process. | 2404 |
| NERR_DevInvalidOpCode | The operation is invalid for this device. | 2331 |
| NERR_DevNotFound | This device cannot be shared. | 2332 |
| NERR_DevNotOpen | This device was not open. | 2333 |
| NERR_DevNotRedirected | The device is not connected. | 2107 |
| NERR_DfsAlreadyShared | The server share specified is already shared in the Distributed File System (Dfs). | 2664 |
| NERR_DfsBadRenamePath | The specified rename target path is invalid. | 2671 |
| NERR_DfsCantCreateJunctionPoint | Unable to create a junction point. | 2669 |
| NERR_DfsCyclicalName | A cycle in the Dfs name was detected. | 2674 |
| NERR_DfsInternalCorruption | The internal database maintained by the Dfs service is corrupt. | 2660 |
| NERR_DfsInternalError | Dfs internal error. | 2690 |
| NERR_DfsLeafVolume | The operation is not valid on a leaf volume. | 2667 |
| NERR_DfsNoSuchServer | The specified server is not a server for this volume. | 2673 |
| NERR_DfsNoSuchShare | The indicated server share does not support the indicated Dfs volume. | 2665 |
| NERR_DfsNoSuchVolume | There is no volume whose entry path matches the input entry path. | 2662 |
| NERR_DfsNotALeafVolume | The operation is not valid on a non-leaf volume. | 2666 |
| NERR_DfsNotSupportedInServerDfs | The operation is not supported on a server-based Dfs. | 2675 |
| NERR_DfsServerNotDfsAware | The server is not Dfs Aware. | 2670 |
| NERR_DfsVolumeAlreadyExists | A volume with the given name already exists. | 2663 |
| NERR_DfsVolumeDataCorrupt | One of the records in the internal Dfs database is corrupt. | 2661 |
| NERR_DfsVolumeHasMultipleServers | The operation is ambiguous because the volume has multiple servers. | 2668 |
| NERR_DfsVolumeIsOffline | The specified Dfs volume is offline. | 2672 |
| NERR_DifferentServers | The source and destination paths are on different servers. | 2383 |
| NERR_DriverNotFound | The device driver does not exist. | 2166 |
| NERR_DuplicateName | A duplicate message alias exists on the network. | 2297 |
| NERR_DuplicateShare | The name has already been shared. | 2118 |
| NERR_DupNameReboot | The computer name already exists on the network. Change it and restart the computer. | 2144 |
| NERR_ErrCommRunSrv | An error occurred when communicating with a Run server. | 2389 |
| NERR_ErrorExecingGhost | An error occurred when starting a background process. | 2391 |
| NERR_ExecFailure | A failure occurred when executing a remote administration command. | 2315 |
| NERR_FileIdNotFound | There is not an open file with that identification number. | 2314 |
| NERR_GroupExists | The group already exists. | 2223 |
| NERR_GroupNotFound | The group name could not be found. | 2220 |
| NERR_GrpMsgProcessor | An error occurred in the domain message processor. | 2280 |
| NERR_ImageParamErr | Image parameter substitution failed. | 2508 |
| NERR_IncompleteDel | The message alias was not successfully deleted from all networks. | 2299 |
| NERR_InternalError | An internal Windows NT error occurred. | 2140 |
| NERR_InUseBySpooler | This device is already in use by the spooler. | 2342 |
| NERR_InvalidAPI | The requested API is not supported on the remote server. | 2142 |
| NERR_InvalidComputer | This computer name is invalid. | 2351 |
| NERR_InvalidDatabase | The security database is corrupted. | 2247 |
| NERR_InvalidDevice | This is an invalid device name. | 2294 |
| NERR_InvalidLana | The LAN adapter number is invalid. | 2400 |
| NERR_InvalidLogonHours | The user is not allowed to log on at this time. | 2241 |
| NERR_InvalidLogSeek | The log file does not contain the requested record number. | 2440 |
| NERR_InvalidMaxUsers | The Peer service supports only two simultaneous users. | 2122 |
| NERR_InvalidUASOp | This operation is not permitted when the Netlogon service is running. | 2451 |
| NERR_InvalidWorkstation | The user is not allowed to log on from this workstation. | 2240 |
| NERR_IsDfsShare | The share must be removed from the Dfs before it can be deleted. | 2321 |
| NERR_ItemNotFound | The queue is empty. | 2115 |
| NERR_JobInvalidState | This operation cannot be performed on the print job in its current state. | 2164 |
| NERR_JobNoRoom | No more print jobs can be added. | 2156 |
| NERR_JobNotFound | The print job does not exist. | 2151 |
| NERR_LanmanIniError | An error occurred when opening or reading the configuration file. | 2131 |
| NERR_LastAdmin | This operation is not allowed on the last administrative account. | 242 |
| NERR_LineTooLong | A line in the configuration file is too long. | 2149 |
| NERR_LocalDrive | The drive letter is in use locally. | 2405 |
| NERR_LocalForward | Messages cannot be forwarded back to the same workstation. | 2279 |
| NERR_LogFileChanged | This log file has changed between reads. | 2378 |
| NERR_LogFileCorrupt | Log file %1 is corrupt. | 2379 |
| NERR_LogonDomainExists | There is already a logon domain for this computer. | 2216 |
| NERR_LogonNoUserPath | The server is configured without a valid user path. | 2211 |
| NERR_LogonScriptError | An error occurred while loading or running the logon script. | 2212 |
| NERR_LogonServerConflict | A centralized logon-server conflict occurred. | 2210 |
| NERR_LogonServerNotFound | The logon server could not be found. | 2215 |
| NERR_LogonsPaused | Network logons are paused. | 2209 |
| NERR_LogonTrackingError | Could not set logon information for this user. | 2454 |
| NERR_LogOverflow | Log file %1 is full. | 2377 |
| NERR_MaxLenExceeded | The specified string and prefix are too long. | 2354 |
| NERR_MsgAlreadyStarted | The Messenger service is already started. | 2271 |
| NERR_MsgInitFailed | The Messenger service failed to start. | 2272 |
| NERR_MsgNotStarted | The Messenger service has not been started. | 2284 |
| NERR_MultipleNets | This operation is not supported on computers with multiple networks. | 2300 |
| NERR_NameInUse | The message alias is currently in use. Try again later. | 2283 |
| NERR_NameNotForwarded | Messages for this alias are not currently being forwarded. | 2288 |
| NERR_NameNotFound | The message alias could not be found on the network. | 2273 |
| NERR_NetlogonNotStarted | The Netlogon service has not been started. | 2455 |
| NERR_NetNameNotFound | This shared resource does not exist. | 2310 |
| NERR_NetNotStarted | The workstation driver is not installed. | 2102 |
| NERR_NetworkError | A general network error occurred. | 2136 |
| NERR_NoAlternateServers | There are no alternate servers registered on this server. | 2467 |
| NERR_NoCommDevs | There are no shared communication devices. | 2337 |
| NERR_NoComputerName | The computer name could not be added as a message alias. The name may already exist on the network. | 2270 |
| NERR_NoForwardName | The forwarded message alias could not be found on the network. | 2286 |
| NERR_NonDosFloppyUsed | The image was not generated from an MS-DOS diskette formatted with the /S option. | 2510 |
| NERR_NoNetworkResource | A network resource shortage occurred. | 2155 |
| NERR_NonValidatedLogon | The logon server could not validate the logon. | 2217 |
| NERR_NoRoom | The server is currently out of the requested resource. | 2119 |
| NERR_NoRplBootSystem | No loader is specified in the boot-block definition file. | 2505 |
| NERR_NoSuchAlert | An invalid or nonexistent alert name was raised. | 2432 |
| NERR_NoSuchConnection | The connection identification does not specify a valid connection. | 2462 |
| NERR_NoSuchServer | The server identification does not specify a valid server. | 2460 |
| NERR_NoSuchSession | The session identification does not specify a valid session. | 2461 |
| NERR_NotInCache | This user is not cached in user accounts database session cache. | 2235 |
| NERR_NotInDispatchTbl | The service control dispatcher could not find the service name in the dispatch table. | 2192 |
| NERR_NotLocalDomain | The computer is not active in this domain. | 2320 |
| NERR_NotLocalName | The name is not on the local computer. | 2285 |
| NERR_NotLoggedOn | The workstation is not logged on to the local-area network. | 2201 |
| NERR_NotPrimary | This operation is only allowed on the primary domain controller of the domain. | 2226 |
| NERR_OpenFiles | There are open files on the connection. | 2401 |
| NERR_PasswordCantChange | The password of this user cannot change. | 2243 |
| NERR_PasswordExpired | The password of this user has expired. | 2242 |
| NERR_PasswordHistConflict | This password cannot be used now. | 2244 |
| NERR_PasswordMismatch | A password mismatch has been detected. | 2458 |
| NERR_PasswordTooRecent | The password of this user is too recent to change. | 2246 |
| NERR_PasswordTooShort | The password is shorter than required. | 2245 |
| NERR_PausedRemote | The message was sent | 2281 |
| NERR_ProcNoRespond | The print processor is not responding. | 2160 |
| NERR_ProcNotFound | The print processor is not installed. | 2168 |
| NERR_ProfileCleanup | The system cannot delete current connections to network resources. | 2372 |
| NERR_ProfileFileTooBig | Profile files cannot exceed 64 KB. | 2370 |
| NERR_ProfileLoadErr | An error occurred while loading the profile file. | 2374 |
| NERR_ProfileOffset | The start offset is out of range. | 2371 |
| NERR_ProfileSaveErr | Errors occurred while saving the profile file. The profile was partially saved. | 2375 |
| NERR_ProfileUnknownCmd | The system was unable to parse the command line in this file. | 2373 |
| NERR_ProgNeedsExtraMem | The program below needs more memory. | 2501 |
| NERR_QExists | The printer queue already exists. | 2154 |
| NERR_QInvalidState | This operation cannot be performed on the printer queue in its current state. | 2163 |
| NERR_QNoRoom | No more printers can be added. | 2155 |
| NERR_QNotFound | The printer does not exist. | 2150 |
| NERR_QueueNotFound | The queue you specified does not exist. | 2338 |
| NERR_RedirectedPath | The operation is invalid on a redirected resource. | 2117 |
| NERR_RemoteBootFailed | The workstation failed to boot. | 2503 |
| NERR_RemoteErr | A remote API error occurred. | 2127 |
| NERR_RemoteFull | The message alias table on the remote station is full. | 2287 |
| NERR_RemoteOnly | This operation is not supported on workstations. | 2106 |
| NERR_ResourceExists | The resource permission list already exists. | 2225 |
| NERR_ResourceNotFound | The resource name could not be found. | 2222 |
| NERR_RPL_CONNECTED | A second connection to a Remoteboot resource is not allowed. | 2519 |
| NERR_RplAdapterInfoCorrupted | Adapter id record information has been corrupted. | 2625 |
| NERR_RplAdapterNameUnavailable | Chosen network adapter id is in use by some other workstation. | 2633 |
| NERR_RplAdapterNotFound | Adapter record was not found. | 2637 |
| NERR_RplBackupDatabase | Service failed to backup Remoteboot database. | 2636 |
| NERR_RplBadDatabase | Service failed to start because its database is absent or corrupt. | 262 |
| NERR_RplBadRegistry | Service failed to start due to bad startup information in the registry. | 2611 |
| NERR_RplBootInfoCorrupted | Boot block record information has been corrupted. | 2628 |
| NERR_RplBootInUse | There are workstations. | 2635 |
| NERR_RplBootNameUnavailable | The boot name or vendor identifier is in use by some other boot block record. | 2640 |
| NERR_RplBootNotFound | Boot block record was not found. | 2631 |
| NERR_RplBootRestart | Remote boot will be restarted later. | 2511 |
| NERR_RplBootServiceTerm | Remote boot service was stopped; check the error log for the cause of the problem. | 2517 |
| NERR_RplBootStartFailed | Remote boot startup failed; check the error log for the cause of the problem. | 2518 |
| NERR_RplCannotEnum | Cannot enumerate service records. | 2615 |
| NERR_RplConfigInfoCorrupted | Configuration record information has been corrupted. | 2623 |
| NERR_RplConfigNameUnavailable | Configuration name is in use by some other configuration. | 2641 |
| NERR_RplConfigNotEmpty | There are profiles using this configuration. | 2634 |
| NERR_RplConfigNotFound | Configuration record was not found. | 2624 |
| NERR_RplIncompatibleProfile | Chosen profile is incompatible with this workstation. | 2632 |
| NERR_RplInternal | An internal service error has occurred. | 2626 |
| NERR_RplLoadrDiskErr | A disk I/O error occurred. | 2507 |
| NERR_RplLoadrNetBiosErr | NetBIOS returned an error—the NCB and SMB are dumped above?. | 2506 |
| NERR_RplNeedsRPLUSERAcct | The RPLUSER local group could not be found. | 2630 |
| NERR_RplNoAdaptersStarted | Service failed to start since none of the network adapters started with this service. | 2610 |
| NERR_RplNotRplServer | Service failed to start because RPLUSER group is absent. | 2614 |
| NERR_RplProfileInfoCorrupted | Profile record information has been corrupted. | 2619 |
| NERR_RplProfileNameUnavailable | Profile name is in use by some other profile. | 2621 |
| NERR_RplProfileNotEmpty | There are workstations using this profile. | 2622 |
| NERR_RplProfileNotFound | Profile record was not found. | 2620 |
| NERR_RplRplfilesShare | Service failed to start because RPLFILES share is absent. | 2613 |
| NERR_RplSrvrCallFailed | The call to the Remoteboot server failed. | 2512 |
| NERR_RplVendorInfoCorrupted | Vendor id record information has been corrupted. | 2627 |
| NERR_RplVendorNameUnavailable | Vendor name is in use by some other vendor record. | 2639 |
| NERR_RplVendorNotFound | Vendor record was not found. | 2638 |
| NERR_RplWkstaInfoCorrupted | Workstation record information has been corrupted. | 2616 |
| NERR_RplWkstaNameUnavailable | Workstation name is in use by some other workstation. | 2618 |
| NERR_RplWkstaNeedsUserAcct | The user account for this workstation record is missing. | 2629 |
| NERR_RplWkstaNotFound | Workstation record was not found. | 2617 |
| NERR_RunSrvPaused | The Run server you requested is paused. | 2385 |
| NERR_ServerNotStarted | The Server service is not started. | 2114 |
| NERR_ServiceCtlBusy | The service control is busy. | 2187 |
| NERR_ServiceCtlNotValid | The requested pause or stop is not valid for this service. | 2191 |
| NERR_ServiceCtlTimeout | The service is not responding to the control function. | 2186 |
| NERR_ServiceEntryLocked | The service does not respond to control actions. | 2183 |
| NERR_ServiceInstalled | The requested service has already been started. | 2182 |
| NERR_ServiceKillProc | The service ended abnormally. | 2190 |
| NERR_ServiceNotCtrl | The service could not be controlled in its present state. | 2189 |
| NERR_ServiceNotInstalled | The service has not been started. | 2184 |
| NERR_ServiceNotStarting | A thread for the new service could not be created. | 2194 |
| NERR_ServiceTableFull | The service table is full. | 2181 |
| NERR_ServiceTableLocked | The service database is locked. | 2180 |
| NERR_ShareMem | An internal error occurred. The network cannot access a shared memory segment. | 2104 |
| NERR_ShareNotFound | The shared resource you are connected to could not be found. | 2392 |
| NERR_SourceIsDir | The source path cannot be a directory. | 2380 |
| NERR_SpeGroupOp | This operation is not allowed on this special group. | 2234 |
| NERR_SpoolerNotLoaded | The spooler is not running. | 2161 |
| NERR_SpoolNoMemory | A spooler memory allocation failure occurred. | 2165 |
| NERR_StandaloneLogon | The logon server was not specified. Your computer will be logged on as STANDALONE. | 2214 |
| NERR_StartingRplBoot | Connecting to the Remoteboot server. | 2516 |
| NERR_SyncRequired | This replicant database is outdated; synchronization is required. | 2249 |
| NERR_TimeDiffAtDC | This server's clock is not synchronized with the primary domain controller's clock. | 2457 |
| NERR_TmpFile | A failure occurred when opening a remote temporary file. | 2316 |
| NERR_TooManyAlerts | The alert table is full. | 2431 |
| NERR_TooManyConnections | The server has reached the maximum number of connections it supports. | 2465 |
| NERR_TooManyEntries | The buffer for types is not big enough. | 2362 |
| NERR_TooManyFiles | The server cannot open more files because it has reached its maximum number. | 2466 |
| NERR_TooManyImageParams | Too many image parameters cross disk sector boundaries. | 2509 |
| NERR_TooManyItems | Requested addition of items exceeds the maximum allowed. | 2121 |
| NERR_TooManyNames | The maximum number of added message aliases has been exceeded. | 2277 |
| NERR_TooManyServers | There is no space for another entry in the table of available servers. | 2463 |
| NERR_TooManySessions | The server has reached the maximum number of sessions it supports. | 2464 |
| NERR_TooMuchData | The data returned from a remote administration command has been truncated to 64 KB. | 2317 |
| NERR_TruncatedBroadcast | The broadcast message was truncated. | 2289 |
| NERR_TryDownLevel | Try the down-level, or remote admin protocol, version of API instead. | 2470 |
| NERR_UnableToAddName_F | The logon processor did not add the message alias. | 2205 |
| NERR_UnableToAddName_W | The logon processor did not add the message alias. | 2204 |
| NERR_UnableToDelName_F | The logoff processor did not delete the message alias. | 2207 |
| NERR_UnableToDelName_W | The logoff processor did not delete the message alias. | 2206 |
| NERR_UnknownDevDir | The device or directory does not exist. | 2116 |
| NERR_UnknownServer | The server could not be located. | 2103 |
| NERR_UPSDriverNotStarted | The uninterruptible power supply (UPS) driver could not be accessed by the UPS service. | 2480 |
| NERR_UPSInvalidCommPort | The UPS service could not access the specified communications port. | 2482 |
| NERR_UPSInvalidConfig | The UPS service is not configured correctly. | 2481 |
| NERR_UPSShutdownFailed | The UPS service failed to perform a system shut down. | 2484 |
| NERR_UPSSignalAsserted | The UPS indicated a line fail or low battery situation. Service not started. | 2483 |
| NERR_UseNotFound | The network connection could not be found. | 2250 |
| NERR_UserExists | The user account already exists. | 2224 |
| NERR_UserInGroup | The user already belongs to this group. | 2236 |
| NERR_UserLogon | Deleting a user with a session is not allowed. | 2231 |
| NERR_UserNotFound | The user name could not be found. | 2221 |
| NERR_UserNotInGroup | The user does not belong to this group. | 2237 |
| NERR_WkstaInconsistentState | The Workstation service is in an inconsistent state. Restart the computer before restarting the Workstation service. | 2137 |
| NERR_WkstaNotStarted | The Workstation service has not been started. | 2138 |
| NERR_WriteFault | A write fault occurred. | 2295 |