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master browser problems with specific Xp machine on domain..

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elmurado

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Nov 24, 2004, 2:41:07 AM11/24/04
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We have two domains dom1 dom2.
Dom1=NT4
Dom2=w2003/AD
In event viewer I am getting error 8003 that master browser is forcing
election.
The Dom2 PDC should be the master browser, but my laptop seems to be
disputing this whenever I use RDP for remote to dom2 server. (Each Domain
only has one server.)

Now I can map drives to Dom2 but I cannot browse My Network Places to either
Domain.
however, other machines on domain can.
there is a trsut between the two domains.
I can ping both servers by IP and name but cannot map drive to the old dom1
server.
When I try to UNC the old server it hangs then says network path not found.
I tried changing the reg settings for parameters in browser but it did not
make any difference.
So it seems like a mix of DNS and browser problem to me.
All permissions seem fine as I am domain admin on both doms.

Roger Abell

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Nov 24, 2004, 4:59:34 AM11/24/04
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Let us distinguish between the browse list its master
browser roles, and name resolution via NetBIOS.

You did not say which domain you laptop is within,
where the eventlog is where you see this, and it also
was not clear within what login session (the RDP or
the client laptop itself) you experience the "network
not found" message, so we cannot get too precise here.

So, you have issues when you RDP in from your laptop.
Where is your laptop then? And do you mean that just
before, and also just after, the RDP activity, everything
works as expected ?

The browse list allows you to browse to remote shares,
while mapping a drive will not use the browse list but
will use direct name resolution.
In other words, if you use the "map network drive"
feature, and enter \\targetmachine.dnsdomain.com\sharename
you seem to say it works, but then you say you cannot
"UNC the old server" which seems to mean that
\\NetBIOSname\sharename will fail with
network path not found.
The first of these UNC paths will use DNS resolution,
while the second will also use NetBIOS resolution.
Neither depends on whether there is anything in the
browse list.

That you see the machine (I assume the laptop) recording
that it is forcing an election only means that it is not seeing
any other members of its domain on the subnet it is on.
You apparently do not have a WINS, as after it wins the
election it is unable to contact the domain controllers in
order to get the master browse list. (You seem to have
slightly mixed up the domain master browser and the master
browser roles - there is a master browser for each network
segment for each protocol)

Well, if there is no WINS, and if the laptop has travelled to
an isolated subnet, then it is not surprising that use of an
UNC based on the servers' NetBIOS names will not work.

OK, so fill in the blanks for us and put an end to this speculation.
--
Roger Abell
Microsoft MVP (Windows Security)
MCSE (W2k3,W2k,Nt4) MCDBA
"elmurado" <elmu...@discussions.microsoft.com> wrote in message
news:2C6CE924-BD7B-4F79...@microsoft.com...

elmurado

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Nov 24, 2004, 11:41:01 PM11/24/04
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Hi roger, thanks for the reply and apologies for not being clearer in my post.

Mylaptop is in Dom2, the new AD domain.
I was assuming that the PDC(Dom2) would be the master browser but now after
reading your reply I'm not sure. The event 8003 shows up in the PDC logs each
time I establish an RDP session.

event 8033 shows up on the laptop log for when the RDP session is started
saying that an election was forced because the master browser stopped.

The network not found message comes up when I try to use my laptop add a
local printer port or if I try and UNC the old Dom1 domain.

However I can map drives to the Dom2 (AD) domain, using just
\\servername\share from my Laptop.
Other machines can browse both domains via My network Places which makes me
think that it must be a browser issue with my machine alone.

We only have a single subnet --everything is on the same segment.
My laptop does 'leave' the network pretty often so I'm guessing that has
some efffect on the 'master browser' status.

We do have a WINS server--the PDC for Dom2 is actually a WINs too--maybe I
have set that up wrong?

Ace Fekay [MVP]

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Nov 25, 2004, 11:52:11 AM11/25/04
to
In news:7E0F568A-B7F6-4DD0...@microsoft.com,
elmurado <elmu...@discussions.microsoft.com> made a post then I commented
below

> Hi roger, thanks for the reply and apologies for not being clearer in
> my post.
>
> Mylaptop is in Dom2, the new AD domain.
> I was assuming that the PDC(Dom2) would be the master browser but now
> after reading your reply I'm not sure. The event 8003 shows up in the
> PDC logs each time I establish an RDP session.
>
> event 8033 shows up on the laptop log for when the RDP session is
> started saying that an election was forced because the master browser
> stopped.
>
> The network not found message comes up when I try to use my laptop
> add a local printer port or if I try and UNC the old Dom1 domain.
>
> However I can map drives to the Dom2 (AD) domain, using just
> \\servername\share from my Laptop.
> Other machines can browse both domains via My network Places which
> makes me think that it must be a browser issue with my machine alone.
>
> We only have a single subnet --everything is on the same segment.
> My laptop does 'leave' the network pretty often so I'm guessing that
> has
> some efffect on the 'master browser' status.
>
> We do have a WINS server--the PDC for Dom2 is actually a WINs
> too--maybe I have set that up wrong?
>

If I may jump in here for a sec, are you using RDP into a Terminal server to
an RDP session? Or are you connecting to an XP machine? If a Terminal
srever, is the Terminal server multihomed?

The 8003 Event log errors may be due to UDP forwarding, but not sure in your
case. If the Terminal serer is multihomed, that maybe the case and may need
to disable NetBIOS on one of the interfaces. See this about more info:
8003 Browsing Errors with UDP Forwarding on the Router:
http://support.microsoft.com/kb/q135464/

Here's how the whole thing works:
102878 - Information on Browser Operation:
http://support.microsoft.com/?id=102878


--
Regards,
Ace

G O E A G L E S !!!
Please direct all replies ONLY to the Microsoft public newsgroups
so all can benefit.

This posting is provided "AS-IS" with no warranties or guarantees
and confers no rights.

Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft Windows MVP - Windows Server - Directory Services

Security Is Like An Onion, It Has Layers
HAM AND EGGS: A day's work for a chicken;
A lifetime commitment for a pig.
--
=================================


elmurado

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Nov 30, 2004, 1:17:02 AM11/30/04
to
Hi ace,
Yes, I've been RDP'ing into a Primary Domain Controller running W2003.

We only have a single network, but two domains running on the network. So
does the server need to be multihomed? I didn't think it would.

i think it's a browser issue but not sure if it's a reg tweak somewhere
that's needed.

The error 8003 does not pop up on the server logs when I RDP in from another
machine.

Murad

Ace Fekay [MVP]

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Nov 30, 2004, 7:50:40 AM11/30/04
to
In news:D9F88912-9394-4A10...@microsoft.com,

elmurado <elmu...@discussions.microsoft.com> made a post then I commented
below
> Hi ace,
> Yes, I've been RDP'ing into a Primary Domain Controller running W2003.
>
> We only have a single network, but two domains running on the
> network. So does the server need to be multihomed? I didn't think it
> would.
>
> i think it's a browser issue but not sure if it's a reg tweak
> somewhere that's needed.
>
> The error 8003 does not pop up on the server logs when I RDP in from
> another machine.
>
> Murad

No, i wouldn't multihome it. I was actually hinting and suggesting against
it.

See if this link helps you out.
http://www.eventid.net/display.asp?eventid=8003&eventno=1918&source=Browser&phase=1

Something is blocking NetBIOS in the session, hence why I believe the laptop
is trying to take the election, but the server kicks back in and wins it. Is
ICF enabled?

Ace


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