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Why does Windows 9x lose clock time?

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I have a large number of various computers running windows 9x. Many of them begin to lose time - some just a few minutes a day, others hours.

We have turned off all energy efficent, removed all scheduled activites, do not run screen savers.

Please tell me the solution.

3 replies

by ebob

As you have experienced, only "some" of your computers loose noticable amounts of time. Some more than others.

There is a good and simple fix.

1 - check and replace the CMOS batteries on the problem computers. This is likely the root cause.2 - install Time Synch services on your network, as follows:

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Setup one of your computers as a "time server". Have it check with one or more of the time servers out on the Internet. These are run by Universities and other government-type institutions. Most are "freely" accessible. Then have all of your computers synch with the server at least once a day.

It is best to load the time synch software that runs as a "service", rather than an "application".

There are Time Synch products available through MS TechNet, and the appropriate O/S Resource Kits. Some O/S's come with Time Synch tools. You can also check out:

http://www.eecis.udel.edu/~ntp/

by archon285

As e-Bob mentions, you need to synchronise your computers.

The clock in fact runs from the motherboard, not from Windows. It is odd that while a cheap battery watch will keep good time, the average motherboard is a very poor timekeeper.

by addam moody

I agree that the RTC on motherboards is usually not the most reliable piece of equipment, but then again, when was the last time anyone noticed DOS boxes loosing time?

One interesting thing in win9x, open up a command prompt and type date.

open up the date/time properties, change the date, but do not click OK or apply.

Type date at the command prompt again.

Realtime alterations to the RTC?
Perhaps there's more at work here than simply a bad timekeeper...

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