On 6/27/2016 3:55 PM, Tim Slattery wrote:
My wife told me that the clock was off by over an hour on her Win8.1
desktop. I brought up the clock setting window (click on the clock). I
set the time correctly, and clicked the box to make it sync with an
Internet time source (the domain name was already filled in).

Then I got a message saying that the Windows time service was not
running, and I should start it. Why in the world would this service
not be running? And how do I start it?

Windows 10. It is similar in Windows 8.1 and Windows XP as I remember

I have found that what ever reason I have to change time servers
occasionally.

To do this go go the Control Panel, Clock, Language and Region, Date
and Time.

In the Tab: Internet Time, Change Settings

In the window that pops there is a Server Window.

You have the selection of several time servers.

time.windows.com This is the default time server for the Windows install.

I use

time.nist.gov

This is the Universal time server for the US which many institutions use
when they need absolutely correct time use ie Astronomy, ect.

I use the same time server for my Router/Modem. If the router/modem's
time gets out of sync with the computer you can have internet problems.

While you in the Date and Time you can check to insure the time zone has
not been changed, and the Daylight Saving Time has been checked.