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Windows 7: Cannot access shares on Windows 7 from XP machines

20 Sep 2010   #11

Windows 7 Ultimate 64bit

This may have an impact on the problem you are describing, have a look, make the necessary edits to the two registry values as described and see if it helps.
Windows 7 Nonpaged Pool Srv Error 2017 |
Keep us posted.

My System SpecsSystem Spec
22 Jan 2011   #12

Windows 7 Home Premium 64bit

Well i faced the same problem. Tried all the stuff like enable file sharing, setting same workgroup, ...etc. Nothing helped but this:
I noticed that there is a multiple number of network adapters in Device manager. All were hidden so one must click View and enable hidden devices. all of it were named something like ...4to6 adapter. When i removed all these adapters my file/printer sharing and networking with XP clients starts working after reboot. If there is a huge number of these adapters you have to remove it all. It can be done using appropriate (32 or 64 bit version) tool DEVCON.EXE (which is part of Windows Driver Kit - Download details: Windows Driver Kit Version 7.1.0). More can be found here The DevCon command-line utility functions as an alternative to Device Manager.
This i have found here microsoft 6to4 adapter and solution is here Automating "6to4" Adapter Removal in Windows - - thank you Ryan.
My System SpecsSystem Spec
11 Mar 2011   #13

win 7 pro 64 OEM
Multi MS OS Network

Quote   Quote: Originally Posted by RustyFalcon View Post
Here is a really good short list of things to do to enable sharing from Win 7 to XP. I used this procedure myself for my computers at home:

How to make Windows 7 work with older Windows versions for networking and file sharing.
This link into MS Technet provided by "RustyFalcon" on 9-12-2009 got me over the hump and back into a fully functioning network.
My System SpecsSystem Spec

06 Sep 2011   #14

Win 7 Home premium x64
Solved issues with UAC

In my case I had very similar problems on a fresh install of windows and after I turned User Access Control (UAC) off, all the problems went away. Hope that helps folks.
My System SpecsSystem Spec
25 Aug 2013   #15

Windows 7

I had been going round for weeks trying to solve this issue! On my Win7 laptop - no problem - on my Win7 PC, no access!

Seems UAC IS the answer... Press Win Key, type UAC, press enter, turn it OFF! Job done! Voila!!

Thanks vik748
My System SpecsSystem Spec
29 Dec 2013   #16

Windows 7 Pro 64

Has anyone else found any other working solutions for this error or than a reboot to the Win7 system? I have tried disabling UAC & all the reg mods listed in this posting and nothing seems to work, the multiple netowrk card issue posted up by rumcaiz isnt affecting the system I am working on.

This system is a network storage system that is accessed by 4 WinXPSP3 workstations on a daily basis, so right now I have a system backup happening on a daily basis with a scheduled reboot. The issue does clear up if I restart the server service, however it would be nice to just have the matter be resolved.
My System SpecsSystem Spec
07 Jan 2014   #17

Windows 8.1 x64

Similiar Issue - Windows 7 Professional with a shared directory. User is connecting via a Windows XP SP3 machine. Several other Windows 7 computers can connect without issue to this share. It appears that the XP user is able to connect successfully immediately following a server reboot and once the connection is lost; ie the mapped network drive goes to a disconnected state; the only course of action is to restart the "Server Service" on the Windows 7 computer and the mapped network drive can be successfully reconnected.
My System SpecsSystem Spec
26 Jun 2014   #18

Windwos 7 Professional x64


I came across the same problem ...

It is definitely linked to an attempt to map a drive from an XP machine to a Win7 one (access two other Win7 machines was successful; attempt to access from another XP machine was not).

The problem was solved by rebooting the target Win7 machine.

Any explanation and how to avoid this in the future ?
My System SpecsSystem Spec
26 Jun 2014   #19

Windows 7 Ultimate x64

Here is a post to a similar problem I posted a possible solution:
Quote   Quote: Originally Posted by phantomofrussia View Post
My first question would be why are you guys using a client machine for sharing when you are in a domain environment?

But here is a thread I found that might solve your problem: windows 7 stops sharing files

This is what solved that users problem with network sharing:
On the server i found err id 2017 with source serv.

I googled on this errcode and found it can be solved by modifying registry.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters\size was on 1 and had to be changed to 3.

It looks like it is working now.

Thanks for all your help.
Hopefully this helps you guys out.
My System SpecsSystem Spec
07 May 2015   #20

DOS 6.2, NT4 server, 2000 server, 2003 server, XP Pro, Win7x64Pro

I'm going to necro this thread for anyone else stuck in this ingenious reinvention of the wheel.

For me and the 216 Windows 7 workstations that could not be accessed by 13 XP desktops, 2 XP laptops, a $105,000 Oce production printer that uses a specialized Windows NT4.0 controller, and a bazillion Dell PowerVault NAS running Windows 2000 Server, the problem was indeed with the hidden network controllers on all of the Windows 7 computers.

Disable those hidden network cards and you will immediately gain access to the Windows 7 shares from all types of pre-Vista OS without even having to reboot anything. Don't try to delete them though. Microsoft geniuses did think about that one and took the necessary programming steps to prevent you from solving puzzles like this and will automatically re-install those hidden network cards in a split second and you'll be left scratching your head and saying.... well that didn't work so it must not be that.

Just DISABLE them.
My System SpecsSystem Spec

 Cannot access shares on Windows 7 from XP machines

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