hostname.exe

Windows ProcessMicrosoft Corporation

Also called hostname, computer name command

WindowsSystem Component

Prints the computer name to the console, then exits. It is a command, not a service and not a background host.

What you need to know

hostname prints the name, it is not a service.

hostname.exe writes the DNS hostname to stdout. Scripts and Command Prompt call it. It is not Computer Browser, not Dnscache, and not a tray app.

Safe?: Yes, in System32
Is it a service?: No. It prints and exits
Should it stay running?: No. A stuck copy is unusual

Feex says

If hostname flashed in Task Manager, I treat that as a script asking the PC name. I do not hunt a Hostname service to disable.

What is hostname.exe?

hostname.exe prints the computer name. It is not a service. The binary is a short-lived Windows command in System32.

What does it do?

It reads the hostname and writes one line. It does not rename the PC. That is Settings or Rename-Computer. It does not stay resident.

Why is it running?

A script, an installer, or you typed hostname. If it is still running minutes later, something launched it in a loop or the name is a fake path.

Is it safe?

Usually safe

System32 hostname.exe is the command. A hostname.exe in a toolkit zip is not that command.

A legitimate copy normally runs from:

C:\Windows\System32\hostname.exe

CLI only
Not a service
Expected to exit immediately

Can I end it?

Usually already gone

Ending hostname.exe only matters if a loop keeps spawning it. Stopping a service named something else will not cancel this command.

Can I remove it?

Do not delete hostname.exe. Scripts that print the computer name will fail. Renaming the PC is a Settings change.

Should it start with Windows?

A script may call it at logon. It should not be a Startup Apps row of its own.

Normal resource behavior

These are contextual labels, not universal averages.

CPU: Negligible
Memory: Tiny, then gone
Disk: None
Network: None. It prints a local name

File information

hostname.exe file information
Executable name	hostname.exe
Common legitimate path	C:\Windows\System32\hostname.exe
Publisher	Microsoft Corporation
Signature expectation	Signed by Microsoft Windows

Common problems

People look for a Hostname service

There is not one for this exe. Computer Name lives in Settings > System > About.

Loop in a broken logon script

The parent is cmd.exe or powershell.exe. Fix the script. Do not delete System32\hostname.exe.

Troubleshooting

Diagnose before you change anything destructive.

See the parent process

Command Prompt or PowerShell usually started it. That parent is the story.

Open file location

System32 only. Any other folder is a different program.

Technical details

hostname.exe technical details
Image name	hostname.exe
Role	Print computer name and exit

Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Feex Reviewed. How we research.

Microsoft Learn: hostname · Prints the computer name
Microsoft Learn: Windows · Primary Windows documentation
Foxhole process map · First-party samples on Windows PCs. Not a lab benchmark.

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