Alan Singfield, about 2 yrs, 10 days ago
Monday May 10, 2010 11:14 AM

Thanks, this solved my problem - it looks like the DHCP doesn't seem to work very well.

John Vajda, about 2 yrs, 7 days ago
Thursday May 13, 2010 5:41 AM

Wow, MANY THANKS for taking the time to post this. It solved my problem.

I too had installed a new router, and my vpn connection started failing with an error code of 720. Event ID 20253 appeared in the System event log of the vpn server as described above. I could tell that the Windows 7 pptp (or actually sstp) server was the culprit, not the client. Interestingly, when I reverted to troubleshooting by using old router, the problem persisted.

In Windows 7, there is no rrasmgmt.msc snapin. Simply go into Control Panel -> Network and Internet -> Network and Sharing Center -> Change Adapter settings. Select "Incoming Connections", right-click and go into Properties, and select a static address pool for IPv4.

Ed A, about 1 yr, 11 mths ago
Thursday June 10, 2010 7:14 PM

Just found this by chance after hours searching on Google and going through tons of bad advice. Thank you!

Marek, about 1 yr, 2 mths ago
Sunday March 6, 2011 1:00 PM

Many thanks, I spending days searching on Google and MS forum

Michael, about 1 yr, 2 mths ago
Monday March 21, 2011 12:24 AM

Excellent. Fixed my problem. Why can't the error log say it's having trouble allocating an IP address, rather than being so obtuse, eh?

Mohsen Heydari, about 1 yr, 8 days ago
Thursday May 12, 2011 9:25 AM

Thanks a lot! i couldn't fix my problem without that info

Drmaster, about 9 mths, 11 days ago
Tuesday August 9, 2011 9:13 AM

YES!!!! It is WORK!!!! Thanks!!!!
(win 2008 server r2 x64 instaled on vmware work-on, TMG)

hernadi, about 7 mths, 25 days ago
Sunday September 25, 2011 9:46 AM

To fix error 720 :
C:windowssystem32sfc.exe /scannow, and then restart.

hernadi, about 7 mths, 25 days ago
Sunday September 25, 2011 9:48 AM

To fix error 720 :
C:windows system32 sfc.exe /scannow, and then restart.

Rico, about 4 mths, 14 days ago
Friday January 6, 2012 2:03 AM

You are a Champ, it worked for me too :-)

Thanks a million.

Ramon, about 1 mth, 25 days ago
Saturday March 24, 2012 1:15 AM

Thank you so much, I was about to give up and that solved my issue immediately. My router does not support GRE so I had to turn to SSTP, but my server hostname is not externally routable.
I went ahead go a new domain, and a new ssl certificate and was about to go crazy if this did not work. Thank you for your assistance.

Ben, about 1 yr, 1 mth ago
Tuesday April 5, 2011 1:38 AM

Hey mate,
loved the write up. and has inspired me to try it on my BF2 XR6. Wondering where you've got pics of the installation.
Thanks.

Ned, about 1 yr, 1 mth ago
Tuesday April 5, 2011 1:06 PM

Hi, this is an incomplete post… I keep meaning to update it. Send me some contact details via the contact form on here - http://hardanswers.net/contact and I’ll see what I can do.

Maz, about 1 yr, 1 mth ago
Saturday April 16, 2011 2:54 PM

Gday. This is my car and car pc project so I have all the photos from the install. Sorry I havent got around to finishing the writeup. If you send ned some contact details he'll be able to put us in touch and i can give you any extra info.
I seem to have killed my scan converter last week so I'm a bit sus on it. I'll be ringing the company tomorrow about it.

scotservais1@gmail.com, about 10 mths, 4 days ago
Saturday July 16, 2011 5:03 AM

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Ned, about 8 mths, 20 days ago
Tuesday August 30, 2011 3:13 PM

Oooh, how exciting! Will it make me rich?

Katrina, about 2 yrs, 4 mths ago
Friday January 8, 2010 5:37 PM

A huge thank you on this! 24 hours after following these instructions, the VM is still keeping perfect time. This has solved so many problems.

Mardolf, about 2 yrs, 3 mths ago
Monday February 1, 2010 9:09 AM

Best!

Romansmm, about 2 yrs, 2 mths ago
Monday March 8, 2010 8:16 AM

Thanks! It's very useful and it works!

grasomega, about 2 yrs, 17 days ago
Monday May 3, 2010 2:08 PM

Thank you very much for this article! I found it after some search and it looks lke it's the only method that works flawlessly. Keep up the good work!

hyperblah, about 2 yrs, 3 days ago
Monday May 17, 2010 1:10 PM

Thank you very much for that kernel line. I would buy you a beer if I could :)

Urban Alho, about 1 yr, 11 mths ago
Thursday June 3, 2010 8:28 PM

Thank you VERY MUCH, i usually google things pretty fast and nothing worked until i found this guide. THANK YOU

Leonardo Rodrigues, about 1 yr, 9 mths ago
Thursday July 29, 2010 11:36 PM

after LOTS of research on this subject/problem, i have found lots of articles asking to change kernel parameters to minimize the clock drift problems. Basically all articles suggested a mix of 3 kernel arguments:

divider=10
clocksource=acpi_pm
notsc

after some researchs, i've found that the combination of 'divider=10 notsc' is the best one, even better that the 'divider=10 clocksource=acpi_pm' proposed here.

with 'divider=10 clocksource=acpi_pm' my clock was still drifting about 12 seconds in 600 seconds. With 'divider=10 notsc' the drift was about 1.5-2 seconds in 600 seconds. That's the lowest i've acchieved with LOTS of combinations settings i've tried. NO option i've found could SOLVE the drift problem, but these could take it to more acceptable levels, so ntpd could be able to correct it.

hope this helps ..... and remember YMMV ... take your tests and find what's best for you.

Leonardo Rodrigues, about 1 yr, 9 mths ago
Thursday July 29, 2010 11:45 PM

i forgot to mention on my comment above ..... my tests were done on CentOS 5.5 x86_64 machines running over HyperV 2008-R2

Ned, about 1 yr, 5 mths ago
Thursday November 25, 2010 6:50 AM

Thanks Leonardo, I have updated the article to reflect your findings. Based on some recommendations from VMWare, it appears that “notsc divider=10” is recommended for x64, whereas “divider=10 clocksource=acpi_pm” is recommended for x86.

Jeff Russell, about 2 mths, 5 days ago
Friday March 16, 2012 12:32 AM

Thank you so much for this! I've been having this issue with a Centos VM running Zimbra Collaboration Suite and was fed up with my email registering times in the future! This seems to have resolved it at long last! Thank you again!

Akom, about 3 yrs, 7 mths ago
Monday September 29, 2008 1:38 AM

Saved me tons of time. Though in the end it turned out that I had nothing besides spam! :)
Thanks for posting this.

anon, about 2 yrs, 4 mths ago
Saturday December 26, 2009 6:00 AM

Thank you! This saved me a bunch of time.

WaN, about 6 mths, 8 days ago
Friday November 11, 2011 9:07 PM

Hye.. Very useful info, yet mine not even have visual :(

Chakotey, about 1 yr, 10 mths ago
Monday July 12, 2010 3:16 PM

Thank you very much for this tip. This helped me......

Exchange Tester, about 1 yr, 5 mths ago
Monday December 6, 2010 1:48 PM

Thanks for this fine solution! It helped me a lot!

Roman, about 1 yr, 4 mths ago
Tuesday January 18, 2011 3:12 PM

Thanks a lot! Problem is not obvious and it would take quite a time to resolve it by myself!

vijay, about 10 mths, 21 days ago
Wednesday June 29, 2011 10:58 AM

Thank you very much

chris, about 8 mths, 29 days ago
Sunday August 21, 2011 7:33 AM

life saver thank you!

Saif, about 6 mths, 2 days ago
Friday November 18, 2011 12:56 PM

Thank you so much

mrMR, about 2 mths, 27 days ago
Wednesday February 22, 2012 8:36 PM

Thanx... greatfull !

sasharvm, about 2 mths, 20 days ago
Wednesday February 29, 2012 7:13 PM

Thank you very match!

David, about 1 mth, 8 days ago
Monday April 9, 2012 6:31 PM

Very helpful, thanks. Due to a recent password reset, I could no longer access exchange management console on my workstation, but on the server it was fine. Deleting a recently modified credential instantly resolved the problem on my workstation. thanks!

Ira, about 1 yr, 9 mths ago
Sunday August 8, 2010 1:05 AM

Thank you so much!

hguhf, about 3 yrs, 9 mths ago
Tuesday August 5, 2008 9:05 PM

i have onarcade games website http://games.jeddahbikers.com
and i will try to hotprotect the SWF files because i'm running out of Bandwidth

Thanks for the .htaccess code

Ned, about 3 yrs, 8 mths ago
Sunday September 7, 2008 1:43 PM

No worries, I hope you find it useful

Jai, about 1 yr, 8 mths ago
Sunday September 19, 2010 2:21 PM

This is working fine but , When i am playing my mp3 ? Player not play the file ????
Please help

Ned, about 1 yr, 8 mths ago
Sunday September 19, 2010 2:28 PM

That's correct, the player wouldn't have the cookie required to be able to access the file. Basically, the player will be seen as trying to hotlink the file. No easy way around that with this method, you'd basically have to stop using this to protect those files if you want to play them in third-party players outside the browser.

Paavo, about 3 yrs, 4 mths ago
Thursday January 1, 2009 3:37 PM

Thanks, this solved it!

Ned, about 2 yrs, 5 mths ago
Saturday December 12, 2009 1:34 PM

No worries. It seems very buggy and is quite annoying.

Jaime, about 10 mths, 24 days ago
Sunday June 26, 2011 4:21 AM

Saved my bacon, dude! This was the ONE article I found which tells it like it is. Microsoft as usual only covers what's supposed to happen, not what actually does. If I could send you a beer I would.

Dave Dickinson, about 6 mths, 19 days ago
Tuesday November 1, 2011 9:56 AM

This article is the real deal......

Rob, about 5 mths, 17 days ago
Friday December 2, 2011 10:00 PM

Thank you, this was a simple solution to a seemingly complex problem!

Idel, about 3 mths, 11 days ago
Tuesday February 7, 2012 11:40 PM

Trybto use Apache Mobile Filter is a standard Apache filter for device detection and easily usable with mod_rewrite.

http://www.apachemobilefilter,org
http://wiki.apachemobilefilter.org

Ned, about 1 yr, 8 mths ago
Saturday August 21, 2010 9:13 PM

This is a useful test comment.

Yet, about 1 yr, 8 mths ago
Saturday August 21, 2010 9:14 PM

Yet another test

Suri, about 2 yrs, 4 mths ago
Friday December 25, 2009 11:40 AM

Thank u the game is now working

Waris, about 2 yrs, 4 mths ago
Saturday January 9, 2010 6:09 PM

thanks dude

Suvish, about 1 yr, 6 mths ago
Wednesday October 27, 2010 7:52 AM

Nw De Game Working.

prince, about 1 yr, 1 mth ago
Tuesday April 19, 2011 8:05 AM

thanks

prince, about 1 yr, 1 mth ago
Tuesday April 19, 2011 8:06 AM

thanks

linkin park, about 1 yr, 11 days ago
Monday May 9, 2011 7:59 AM

thaks .............its working wonders

Ned, about 3 yrs, 2 mths ago
Sunday February 22, 2009 2:03 AM

I had a few further problems when I added my contacts back to the categories they used to be in, but deleting the categories and recreating them in the desktop version of Windows Live Messenger corrected this.

Angelo, about 3 yrs, 27 days ago
Wednesday April 22, 2009 6:11 AM

Cannot even sign in from HTC WM6.1 to mobile.live.com.
Weird piece of technology....

Filipe, about 3 yrs, 20 days ago
Wednesday April 29, 2009 1:55 AM

Work with me thanks