Having a NTP server on a local network is the most reliable way to allow IQeye cameras to get the correct wall time.  In smaller networks without dedicated timeservers a Windows machine can be configured as a NTP server.  The instructions can be found in a blog entry, Configuring a standalone time server by Microsoft employee Ryan Sizemore.  I've included them below for your convenience.

By default, the Windows NTP server is turned off, but in some cases the w32time service may already be configured to act as a time source (having the 'server piece' turned on).  You can verify if the server is turned on by running the following command:

w32tm /query /configuration

Keep in mind that you will need to be elevated (running PowerShell or a CMD prompt as administrator) to run this command. When you execute this, you will get back a laundry list of configuration settings. We are specifically interested in the NtpServer section:

NtpServer (Local)
DllName: C:\Windows\system32\w32time.dll (Local)
Enabled: 1 (Local)
InputProvider: 0 (Local)
AllowNonstandardModeCombinations: 1 (Local)

The third line will specify whether or not the NtpServer (aka the 'server piece') is turned on. If Enabled is 1, then it's on. If you see that Enabled is 0, then it is off.

You can turn on the NtpServer at any time by running the following commands:

reg add HKLM\system\CurrentControlSet\Services\W32Time\TimeProviders\NtpServer /v Enabled /t REG_DWORD /d 0x1 /f

w32tm /config /update

The first command will change the Enabled flag in the registry to 1 (turning on the NtpServer), then the second command will tell the w32time service that the configuration in the registry need to be re-read, to make the changes active. You can confirm that the NtpServer is in fact running by calling w32time again:

w32tm /query /configuration

If you see enabled is 1, then you are good to go. If not, take a look at the registry using either regedit or the reg command to ensure that the change really made it into the registry.

 

Jeff M.
Added info, screen shot sample from Windows 7 with Windows Time Enabled in Services:

 

Henk H.

Attached utility 'IQenableNTPserver' may be helpful.