Hyper-V Time Synchronization Service (vmictimesync) Defaults in Windows 11
Synchronizes the system time of this virtual machine with the system time of the physical computer.
Default Settings
| Startup type: | Manual |
| Display name: | Hyper-V Time Synchronization Service |
| Service name: | vmictimesync |
| Service type: | share |
| Error control: | normal |
| Object: | NT AUTHORITY\LocalService |
| Path: | %SystemRoot%\system32\svchost.exe -k LocalServiceNetworkRestricted -p |
| File: | %SystemRoot%\System32\icsvc.dll |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\vmictimesync |
| Privileges: |
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Default Behavior
Hyper-V Time Synchronization Service is a Win32 service. In Windows 11 it starts only if the user, an application or another service starts it. When the Hyper-V Time Synchronization Service is started, it logs on as NT AUTHORITY\LocalService and running in a shared process of svchost.exe. If Hyper-V Time Synchronization Service fails to start, the failure details will be recorded into Event Log. Then Windows 11 should boot up and notify the user about the vmictimesync service startup failure.
Dependencies
Hyper-V Time Synchronization Service cannot be started, if the Microsoft Hyper-V Guest Infrastructure Driver service won't start.
Restore Default Startup Configuration of Hyper-V Time Synchronization Service
Before you begin doing this, make sure that all the services on which Hyper-V Time Synchronization Service depends are configured by default and function properly. See the list of dependencies above.1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config vmictimesync start= demand
3. Close the command window and restart the computer.
The vmictimesync service is using the icsvc.dll file that is located in the C:\Windows\System32 directory. If the file is removed or corrupted, read this article to restore its original version from Windows 11 installation media.