Map drive from a Windows 2000 PC

[Philip Herlihy]

I get authentication errors when I try to map a drive on my XP Home
Premium PC to a share on an old Windows 2000 Professional PC. I've
searched the web but advice is inconsistent. What's the trick?

 

[Wolf K]

I get authentication errors when I try to map a drive on my XP Home
Premium PC to a share on an old Windows 2000 Professional PC. I've
searched the web but advice is inconsistent. What's the trick?

I assume you mean that you want a partition on the XP machine to appear
as a "drive" on the Win 2000 machine, and be readable/writable from the
W2K machine. I believe to do that you must set up one of the machines a
server. The peer-to-peer networking that (almost) automatically
configures computers running on XP and later OSs into a network is AFAIK
not supported on W2K (it's been several years since I last used W2K, so
I can't be sure). You'd have to find out what server OS your hardware
can handle.

HTH & Good Luck,
Wolf K.

 

[Zaphod Beeblebrox]

I get authentication errors when I try to map a drive on my XP Home
Premium PC to a share on an old Windows 2000 Professional PC. I've
searched the web but advice is inconsistent. What's the trick?

No need for a server OS, Win2k and WinXP are able to share drives /
folders just fine.

Assuming simple file sharing is disabled on the machine sharing the
resource (since otherwise you shouldn't get authentication errors),
you need to have the same username and password on both machines.

--
Zaphod

Arthur: All my life I've had this strange feeling that there's
something big and sinister going on in the world.
Slartibartfast: No, that's perfectly normal paranoia. Everyone in the
universe gets that.

 

[Philip Herlihy]

I get authentication errors when I try to map a drive on my XP Home
Premium PC to a share on an old Windows 2000 Professional PC. I've
searched the web but advice is inconsistent. What's the trick?

I'm grateful to Wolf and to Zaphod for taking the time to respond but
I'm embarassed to own up to a significant typo: where I wrote 'XP' I
meant 'Windows 7' - this rather changes the question! I'm sorry for
wasting your time. My question should have read:

I get authentication errors when I try to map a drive on my W7 Home
Premium PC to a share on an old Windows 2000 Professional PC. I've
searched the web but advice is inconsistent. What's the trick?

- just to expand: I have a new PC running Windows 7 Home Premium and I
want to transfer files on demand from an old machine running Windows
2000 Pro. I thought I'd simply map a drive, but I get authentication
errors. I gather this is a common situation but I can't find any
consensus on the solution, so before I start tampering with the registry
on the new machine I thought I'd seek advice here.

 

[Zaphod Beeblebrox]

I'm grateful to Wolf and to Zaphod for taking the time to respond
but
I'm embarassed to own up to a significant typo: where I wrote 'XP' I
meant 'Windows 7' - this rather changes the question! I'm sorry for
wasting your time. My question should have read:

I get authentication errors when I try to map a drive on my W7 Home
Premium PC to a share on an old Windows 2000 Professional PC. I've
searched the web but advice is inconsistent. What's the trick?

- just to expand: I have a new PC running Windows 7 Home Premium and
I
want to transfer files on demand from an old machine running Windows
2000 Pro. I thought I'd simply map a drive, but I get
authentication
errors. I gather this is a common situation but I can't find any
consensus on the solution, so before I start tampering with the
registry
on the new machine I thought I'd seek advice here.

Indeed, that does alter the equation. Windows 7 by default will only
use NT LanMan v2 authentication. If this was a non-Home version of
Windows 7, you could use Local Security Policy editor to change the
default. However, since you are on Home Premium you'll have to edit
the registry. You'll need to change
HKLM\System\CurrentControlSet\Control\Lsa\LmCompatibilityLevel to 2
(or create it as a REG_DWORD value and set it to 2 if it isn't already
there). I suspect you'll need to reboot afterward, but I don't know
for sure.

Hope this helps.

 

[Zaphod Beeblebrox]

Indeed, that does alter the equation. Windows 7 by default will
only use NT LanMan v2 authentication. If this was a non-Home
version of Windows 7, you could use Local Security Policy editor to
change the default. However, since you are on Home Premium you'll
have to edit the registry. You'll need to change
HKLM\System\CurrentControlSet\Control\Lsa\LmCompatibilityLevel to 2
(or create it as a REG_DWORD value and set it to 2 if it isn't
already there). I suspect you'll need to reboot afterward, but I
don't know for sure.

Actually, it just occurred to me that it might be better to raise the
authentication level of the Windows 2000 PC rather than lowering it on
the Windows 7 machine. Since that machine is running a Professional
version of Windows, you should be able to use the Local Security
Policy editor to change it. Run secpol.msc and go to Local Policies -
Security Options, scroll down to Network Security: LAN Manager
Authentication Level. Double click it, and bump the setting up to one
of the options that starts "Send NTLMv2 response only" - I'd be
tempted to bump it up as high as it will go (I can't remember what
options Win2k has for this setting).

Good luck, and let us know how it goes.

 

[Philip Herlihy]

Actually, it just occurred to me that it might be better to raise the
authentication level of the Windows 2000 PC rather than lowering it on
the Windows 7 machine. Since that machine is running a Professional
version of Windows, you should be able to use the Local Security
Policy editor to change it. Run secpol.msc and go to Local Policies -
Security Options, scroll down to Network Security: LAN Manager
Authentication Level. Double click it, and bump the setting up to one
of the options that starts "Send NTLMv2 response only" - I'd be
tempted to bump it up as high as it will go (I can't remember what
options Win2k has for this setting).

Good luck, and let us know how it goes.

Thanks, Zaphod - I'll certainly try this when I can get access to the
machines involved. For reference, these (screenshot) are the options on
another Win2K machine I can connect to.

http://screencast.com/t/U4luY4dA

 

[Philip Herlihy]

Thanks, Zaphod - I'll certainly try this when I can get access to the
machines involved. For reference, these (screenshot) are the options on
another Win2K machine I can connect to.

http://screencast.com/t/U4luY4dA

Worked perfectly - thanks so much!

 

[Zaphod Beeblebrox]

Worked perfectly - thanks so much!

Glad I could help!

 

[Zaphod Beeblebrox]

Thanks, Zaphod - I'll certainly try this when I can get access to
the
machines involved. For reference, these (screenshot) are the
options on
another Win2K machine I can connect to.

http://screencast.com/t/U4luY4dA

Thanks Phil - it appears that the list is the same as in current
versions of Windows, I'll have to remember that...