My homegroup network quit working. After much wailing and gnashing of teeth, I believe that the desktop and laptop have system clocks about 3 seconds apart. I have tried multiple times to use the internet synchronization, but regardless of which website I use, the 3 second gap remains. Desktop has Win 7 Pro 64bit, Laptop has Win 7 Enterprise 64bit. Both machines have the Windows Time Synchronization service enable automatic and are running. Any suggestions?

1. Try to disable firewall 2. Try to catch network traffic with network monitor to pinpoint the source of your problem. Regards Milos

Hi , First, make sure the following services are started. HomeGroup Listener HomeGroup Provider For Windows Time issue, you can try the following steps to troubleshoot this issue. Go to Start and type cmd in the search bar. Right click on cmd and select Run as Administrator. Type each one of the command below and press enter. net stop w32time w32tm /unregister w32tm /register net start w32time w32tm /resync Restart the computer to test the issue again. W32tm.exe is used to configure Windows Time service settings. It can also be used to diagnose problems with the time service. W32tm.exe is the preferred command line tool for configuring, monitoring, or troubleshooting the Windows Time service. Hope it helps.Tracy Cai TechNet Community Support

Hi , First, make sure the following services are started. HomeGroup Listener HomeGroup Provider For Windows Time issue, you can try the following steps to troubleshoot this issue. Go to Start and type cmd in the search bar. Right click on cmd and select Run as Administrator. Type each one of the command below and press enter. net stop w32time w32tm /unregister w32tm /register net start w32time w32tm /resync Restart the computer to test the issue again. W32tm.exe is used to configure Windows Time service settings. It can also be used to diagnose problems with the time service. W32tm.exe is the preferred command line tool for configuring, monitoring, or troubleshooting the Windows Time service. Hope it helps.Tracy Cai TechNet Community Support