Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Suddenly cannot connect to an XP machine (others work)

26 Apr 2010   #1

Windows 7 Professional and Home
Suddenly cannot connect to an XP machine (others work)

I have a small home network setup with a handful of Windows XP machines. I recently upgraded one machine to Windows 7 and everything was configured and working. This morning the Windows 7 machine will not connect to one of the XP machines. I set up the Windows 7 machine with two logins (my wife and I) and I have the same accounts and passwords stored on the XP machine. This was working fine. The XP machines are setup in a group and the Windows 7 machine has a homegroup by the same name (not that this matters as I think this is a Windows 7 only thing). I have the userids and passwords stored in credential manager. I entered them as group\username and then password. I can ping back and forth between the machines so I know they see each other.

No matter what I do I cannot get this 7 machine to connect to the XP machine. It could have been any number of software updates or something that could have caused this problem. Recent changes that I can think of are adding Windows Antivirus. Does anyone have any suggestions for diagnosing this issue? Thanks.

My System SpecsSystem Spec
26 Apr 2010   #2

Windows 7 Professional and Home

I just noticed that the date on the Windows 7 PC was correct but the time was not. It was showing a time about 8 hours in the future! I checked the time settings and it was set to auto update from windows time server. I changed it to a government time server - the time updated - and lo and behold I was able to connect to the other XP machine without any problems. We had a electrical storm last night and probably some brown outs (although this machine is plugged into a UPS) - don't know if this did it. Anyway, hopefully this will help someone in the future.
My System SpecsSystem Spec
26 Apr 2010   #3

Windows 7 Ult, Windows 8.1 Pro,

The time/date problem can cause sharing and password problems with Homegroups as well. Thanks for reporting back in simonmason. :)

Windows 7 Homegroup Invalid Passwords Because of Date and Time Settings - Resolve the issue with a simple workaround - Softpedia
My System SpecsSystem Spec


 Suddenly cannot connect to an XP machine (others work)

Thread Tools

Similar help and support threads
Thread Forum
Windows 7 x64 machine suddenly performs restart as if I hit the button
My HTPC has restarted itself probably 2-3 times in the last week. It's your standard Windows 7 restart complete with closing all apps, Logging Off, and Shutting Down screens. The most recent occurrence was just a few minutes ago. I was playing a video, running ATI CCC testing settings, and had...
General Discussion
Windows 7 machine cannot connect to Vista machine
Hi, I've checked here and on a couple of other places; many people seem to have similar problems but not similar enough that I've been able to solve it. I have a HOME workgroup on my Vista machine that is connected to the printer I want to share. I have made HOME the workgroup on my W7 laptop....
Network & Sharing
Suddenly cannot connect to my network PCs in same homegroup
At first a big hello to all ! I am satyam and this is my first post in this forum. I have been using windows 7 pto and xp pro on my laptop and desktop respectively. It was connected in same network from very beginning. I was in same workgroup. But as I reformatted my laptop cpl of days back I...
Network & Sharing
I cant connect to internet suddenly through cable
Please i need help on how to restore my internet connecton with cable for my toshiba e205 computer running win 7
Network & Sharing
My Windows 7 suddenly can't connect
I was just playing an online game and then my computer unexpectedly started to shut itself down to reboot (and install some updates). As soon as I booted back up, my internet connection wasn't working anymore. Other computers in my network are fine, so it's just my computer. I even tried directly...
Network & Sharing

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 04:35.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App