Problem
I couldn’t get windows to synchronize with the time server. I have a Windows Mobile based phone and the time was wrong. In fact, I got was late for a meeting because of this. Argh! I double clicked the clock on my taskbar and beheld the error glaring at me. “An error occured while Windows was synchronizing with time.nist.gov.”

Date and Time Properties window
I tried changing to the time.windows.com server, but got the same error. After much searching and attempting one thing after another, I finally stumbled upon a fix that worked for me. It is possible to add new servers to that list of Internet time servers. To do so requires a trip to the registry. Modify this hive of the registry:
[My Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\DateTime\Servers]
You will see a numbered list of servers. These servers match the DropDown Server selection list on the Internet Time tab in the Date and Time Properties window.
Add a new StringValue
Set its “Name” to the next consecutive number. If the list contains 1 and 2, make this “3″.
Double click the new String Value you just created. This opens a window where you can set its value. Set it to “time-a.nist.gov”. Click Ok.
If the Date and Time Properties window is opened, then close it
Reopen the Date and Time Properties window (double click the clock on your taskbar).
Click the dropdown Server selection and choose the new value.
Vent
The designers of Window Mobile cell phones apparently had to choose whether to update the time like a cell phone does or like a PDA does. A cell phone automagically gets its time from the cell wherever it is. A PDA gets its time when it synchronizes with a PC. Apparently they chose the latter which I find to be completely irritating. What if I am away from my PC for days? The time drifts as computer clocks are prone to do and before you know it, my super duper phone has the wrong time. I find this very irritating and very unintuitive. I would love to hear who made that decision and why they came to that conclusion.
Thanks to