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WINDOWS SERVICE

tzautoupdate: Auto Time Zone Updater

Automatically sets the system time zone.

TECHNICAL SUMMARY

Service nametzautoupdate
Display nameAuto Time Zone Updater
Runs fromC:\Windows\System32\svchost.exe
Command linesvchost.exe -k LocalService -p
Runs asLocalService
VerdictDepends on what you use
Microsoft, Windows Server 2016 guidanceAlready disabled

Paths, signer and service account observed on Windows 11 build 26300 on 12 November 2026. Run the commands below to check your own PC.

Should you touch it?

Depends on what you use

Both of Microsoft's lists give its default startup type as Disabled and rate it Already disabled, so finding it disabled is normal, not a fault. It matters only if you want Windows to set the time zone by itself. On the PC used for this page it was Disabled and stopped.

What PC Tweaker does with it

PC Tweaker does not change this service. No control in the catalogue stops it, disables it or edits its start type.

Check it yourself

  1. See its state and start type

    Get-Service tzautoupdate | Format-List Name, DisplayName, Status, StartType
sc qc tzautoupdate
    PowerShell

  2. Let it start only when needed (administrator)

    Note the START_TYPE that sc qc printed first, so you can put it back.

    sc config tzautoupdate start= demand
    cmd

  3. Put it back

    Use the start type you noted.

    sc config tzautoupdate start= <auto|delayed-auto|demand>
    cmd

Common questions

What does the tzautoupdate service do?

Automatically sets the system time zone. It runs C:\Windows\System32\svchost.exe (svchost.exe -k LocalService -p) as LocalService.

Can I disable tzautoupdate?

Depends on what you use. Both of Microsoft's lists give its default startup type as Disabled and rate it Already disabled, so finding it disabled is normal, not a fault. It matters only if you want Windows to set the time zone by itself. On the PC used for this page it was Disabled and stopped.

tzautoupdate is disabled. Should I enable it?

Disabled is the default Microsoft lists for this service. Its description is one line: it automatically sets the system time zone. The Windows Time service (W32Time) is a separate service.

How do I check that it is the real service?

On Windows 11 build 26300 it is registered as svchost.exe -k LocalService -p, runs as LocalService and loads C:\Windows\system32\tzautoupdate.dll, signed by Microsoft Windows. sc qc tzautoupdate prints the same on your PC.