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Remarks
If computerTofind is an IP address and the query is for an A or PTR resource record type, the name of the computer is returned.
If computerTofind is a name and doesn't have a trailing period, the default DNS domain name is appended to the name. This behavior depends on the state of the following set subcommands: domain, srchlist, defname, and search.
If you type a hyphen (-) instead of computerTofind, the command prompt changes to nslookup interactive mode.
If the lookup request fails, the command-line tool provides an error message, including:
Error message
Description
timed out
The server didn't respond to a request after a certain amount of time and a certain number of retries. You can set the time-out period with the nslookup set timeout command. You can set the number of retries with the nslookup set retry command.
No response from server
No DNS name server is running on the server computer.
No records
The DNS name server doesn't have resource records of the current query type for the computer, although the computer name is valid. The query type is specified with the nslookup set querytype command.
Nonexistent domain
The computer or DNS domain name doesn't exist.
Connection refused or Network is unreachable
The connection to the DNS name server or finger server could not be made. This error commonly occurs with the ls and finger requests.
Server failure
The DNS name server found an internal inconsistency in its database and could not return a valid answer.
Refused
The DNS name server refused to service the request.
format error
The DNS name server found that the request packet was not in the proper format. It may indicate an error in nslookup.
ntbackup
Applies to: Windows Server (All supported versions)
The ntbackup command backs up and restores your computer and files from a command prompt. This command is replaced with the wbadmin command.
ntbackup
Important
The wbadmin command can't recover backups created by using the ntbackup commands. The Windows NT Backup - Restore utility is needed to recover from legacy backups.
wbadmin
ntbackup
ntcmdprompt
Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012
Runs the command interpreter Cmd.exe, rather than Command.com, after running a Terminate and Stay Resident (TSR) or after starting the command prompt from within an MS-DOS application.
Syntax
ntcmdprompt
Parameters
Parameter
Description
/?
Displays help at the command prompt.
Remarks
ntfrsutl
Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012
Dumps the internal tables, thread, and memory information for the NT File Replication Service (NTFRS) from both the local and remote servers. The recovery setting for NTFRS in Service Control Manager (SCM) can be critical to locating and keeping important log events on the computer. This tool provides a convenient method of reviewing those settings.
Syntax
ntfrsutl[idtable|configtable|inlog|outlog][<computer>]
ntfrsutl[memory|threads|stage][<computer>]
ntfrsutl ds[<computer>]
ntfrsutl [sets][<computer>]
ntfrsutl [version][<computer>]
ntfrsutl poll[/quickly[=[<n>]]][/slowly[=[<n>]]][/now][<computer>]
Parameters
Parameter
Description
idtable
Specifies the ID table.
configtable
Specifies the FRS configuration table.