Thu 25 Sep 2008
Computer Clock Running Too Fast or Too Slow?
Posted by brett under tutorial, windows
[30] Comments
Is the time running too fast or too slow on your Windows XP computer? If so there’s a good chance the Windows Time Service (which keeps your computer time accurate) is broken. Fixing it is just a matter of restarting the service but you need to get your hands dirty and enter some terminal commands. (click images for full size).
1. Open a command prompt by clicking Start -> Run and typing “cmd” and click the OK button.

2. At the command prompt type “net stop w32time” and hit enter.

3. Now type “w32tm.exe /unregister” and hit enter.

4. Now type “w32tm.exe /register” and hit enter.

5. Finally type “net start w32time” and hit enter.
If you get “The Follwing error occurred: Access is denied. (0×80070005)”
then access to your system files is being protected, often by firewall or anti virus software. First disable your ativirus software and if that does not help uninstall the software completely and restart, then w32tm.exe commands should start working.

May 16th, 2009 at 1:47 pm
Thanks for the info. My clock sometimes runs about 15 minutes fast for no reason. Might be the CMOS battery, but I’d rather try this first.
August 19th, 2009 at 1:37 am
Thank you! I have tried many things and this was the only solution that WORKED!
November 9th, 2009 at 1:55 pm
Thank you for the quick fix.
December 11th, 2009 at 12:46 pm
I was told it was CMOS battery by Microsoft over the phone, but I tried your fix and it is working! Thanks so much!
December 30th, 2009 at 5:36 am
I had such high hopes for this fix. Ran it three times – clock jumped ahead while I was running it the first two times. It just jumped ahead again, now. Bummer.
March 13th, 2010 at 3:19 am
I was at my witts end with the fast clock speed, other sites say “you may have a malware infection”. Anyway halting the
win 32 time , un-registering it and re-registering it worked wonderful for me.
sincerely Dave
April 22nd, 2010 at 5:39 pm
This fix works on Vista as well. Many thanks
April 22nd, 2010 at 5:41 pm
Not sure if first comment got through. Anyway, here it is again. This fix works on VIsta as well
April 22nd, 2010 at 6:19 pm
Thanks for letting us know Graham, glad it worked for you :)
June 24th, 2010 at 11:56 pm
tnx bro. thats my big problem wehn i buy this new motherboard!! i observe if this would work tnx
July 21st, 2010 at 11:42 am
worked for me, too! Thanks!! :)
July 31st, 2010 at 12:30 am
thanks it worked for me thanks a lot
September 14th, 2010 at 1:07 pm
Worked great!!! Clock been off for long time…now it’s great! Thanks!!
September 14th, 2010 at 1:59 pm
Always good to get positive feedback… thanks guys :=)
September 30th, 2010 at 8:43 am
THANK YOU!!! Such an easy fix to such an annoying problem. You rock :).
January 5th, 2011 at 3:37 am
Just would like to make confirm, this is not the same as restarting my PC. correct?
February 19th, 2011 at 5:41 am
Sherif, no it’s not the sane as restarting your PC.
“Sherif says:
January 5th, 2011 at 3:37 am
Just would like to make confirm, this is not the same as restarting my PC. correct?”
March 6th, 2011 at 9:04 am
Could someone tell me what exactly makes the clock speed up? This is happening to me at the persent.
After I typed in, “net stop w32time” as you suggested it came up, “system error 5 has occured” and then it said, “access is denied”.
Does this tell you anything? I mean is there anything I can do further to correct the problem?
I find it’s affecting my pc’s performance.
Thank you for any help.
March 6th, 2011 at 7:06 pm
Hi Rosemary,
Software firewalls like ZoneAlarm can cause this error so if you are running one try disabling it. If you aren’t running a firewall or disabling it doesn’t help there are more troubleshooting tips for this error here…
http://support.microsoft.com/kb/555644
March 17th, 2011 at 5:25 am
Had this problem, tried your advice and it worked like a dream. Very many thanks and best regards.
Jon
May 19th, 2011 at 9:39 pm
I am on XP Pro and my computer time suddenly began to get faster and faster. I tried this fix and got the access denied error. I am on cable modem behind a router so I don’t use a software firewall (have classic HIPS to control programs). So, I turned off my antivirus real time scanner. That made no difference. Suddenly, I remembered that I have XP firewall enabled. I keep it enabled in case I have to remove the router temporarily for troubleshooting. I am afraid I will forget to enable the built in firewall at that time.
So, as soon as I disabled XP’s firewall, the error went away and the fix worked just great! Mahalo (thanks in Hawaiian).
July 14th, 2011 at 9:48 am
Thank you very, very much..
A simple step by step instruction that works and is not unreadable by someone who is not IT literate.
Cheers
July 15th, 2011 at 11:05 pm
Great fix! Thanks
July 20th, 2011 at 5:35 pm
Thanks a lot for the great fix! Muacks!
July 20th, 2011 at 5:37 pm
I noticed that this page has been posted for 3 years now yet there are still people encountering the same problem and solved using your method, this page really helps a lot ! Great work !
August 17th, 2011 at 1:46 am
Great, simple & working. I was looking for this, the wrong clock troubles me with finding the right files that were modified. Thanks
September 2nd, 2011 at 3:17 am
Disabling the firewall is not a solution, it’s a kludge. The firewall was mostly likely set to block internet time synchronization. With the firewall disabled Windows will sync it’s time over the internet and hide the fact your clock still has a problem.
September 19th, 2011 at 12:04 am
Inspite of changing the CMOS battery with a new one, ad also trying ur fix, by windows clock is still running slow/fast. It changes time every minute. Iam unable to work properly as many of my programs depend on windows clock
As suggested somewhere else, does this problem reflects a more problamatic MB??
what are the options available for me?
grt full for good suggestions
October 19th, 2011 at 6:53 pm
Perfect solution for my system that is running XP. Thanks!
November 24th, 2011 at 12:57 pm
i want the timne to be normal.