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Windows 7: [Problem] - Windows 7 ask for password if I access a Windows XP comput

06 Jan 2013   #1

Windows 7 Professional x64
[Problem] - Windows 7 ask for password if I access a Windows XP comput

Well there are 2 PC in my LAN:
  • NB
    • Notebook
    • WiFi connection to my router NETGEAR DGN2200v3
    • Windows 7 Professional x64 SP1
  • DSK
    • Desktop
    • Cabled connection to my router NETGEAR DGN2200V3
    • Windows XP Home Edition 32bit SP3

If from DSK I try to access NB shared folders through network, everything is fine.
If from NB I try to access DSK shared folders through network, the following window appears:

The strange thing is that this problem seems to occur randomly! Sometimes it occurs, sometimes not (during the same session of usage of NB). This is annoying because usually I need to work with NB on files which are stored in DSK through local network, so if I need to apply a change to a file, sometimes I won't have a chance to do that.

Some minutes ago I configured DSK and NB so that the account for both has the same username and password.

When on NB I try to access DSK shared folders, the window I posted above appears, I fill the data but neither this time I have granted access...

This is what happens:
- I reset NB WiFi connection
- Using NB I try to access DSK shared folders --> everything is ok
- About 5 minutes passes
- Using NB I try to access DSK shared folders --> the authentication window appears, I fill the username and password fields but they won't be recognized

I need to work on DSK files directly from NB through my local network, so it is very annoying to reset my WiFi connection every 5 minutes... Just I don't know what the solution to this problem could be.

My System SpecsSystem Spec
07 Jan 2013   #2

Windows 7 Professional x64

My System SpecsSystem Spec
07 Jan 2013   #3

Windows 7 Ult, Windows 8.1 Pro,

This TechNet thread seems to show some solutions for this problem although I have no idea which one might work for you.

How do I disable "Network password" in Windows 7 when accessing computers with previous Windows versions in the same workgroup?
My System SpecsSystem Spec

07 Jan 2013   #4

Windows 7 Professional x64

I've read that thread but I'm using XP Home not Professional, so I haven't found a valid solution...
My System SpecsSystem Spec
08 Jan 2013   #5

Windows 7 Professional x64

Well, after having spent 4 hours/day for 5 days trying to find a solution to this stupid problem, here is what happened:

1) I executed "ping PIDGEON-DSK" on NB.
2) I noticed that IP of DSK was
I thought, strange, DSK was set to a static ip, or
3) I executed "ipconfig" on NB.
I noticed that the network card "Scheda Ethernet VirtualBox Host-Only Network" was associated to the same ip of DSK (
4) I remembered that I installed VirtualBox even on DSK.
5) I noticed that the network card "Scheda Ethernet VirtualBox Host-Only Network" had the same static ip on both DSK and NB (
6) I changed the "Scheda Ethernet VirtualBox Host-Only Network" static ip of DSK to
7) I tried to access DSK shared folders from NB.
8) No authentication window appeared.
9) I was able to browser/modify DSK share folders.
10) I waited 10 more minutes.
11) No authentication window appeared.
12) I was able to browser/modify DSK share folders.

Problem solved.

In short, this happened because some months ago I installed VirtualBox on both DSK and NB. When you install VirtualBox, it creates a network card so that you are able to connect to internet when using the guest system. The problem is that the network card has the same ip ( for every VirtualBox installation, so if you connect 2 PC with VirtualBox installed, there will be network card conflicts unless you change the static IP of one of the cards.
My System SpecsSystem Spec

 [Problem] - Windows 7 ask for password if I access a Windows XP comput

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