Netbootdisk does not work anymore

I have been using Netbootdisk 6.5 for several years to push ghost images to PCs.  Suddenly, everytime anyone uses the disk, after mapping a drive to the ghost server using the net use command, We get the following error  "The password is invalid for \\serverXXX\GHOST   Type the password for \\serverXXX\GHOST"  This is consistent, regardless of the platform, user account, or CD that I am using.  My servers are Server 2003, and my workstations are XP.  I feel that the physical network connection is not the problem because it will lock my account out after the third time.  What could have changed in the network/security infrastructure to cause this problem?  I need a fix or workaround in order to push images to workstations.  
KeyrisktechAsked:
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ReneGeCommented:
From an XP machine where you are logged on locally (not with a domain account), can you access "\\serverXXX\GHOST" with the same credentials used with GHOST?
KeyrisktechAuthor Commented:
From an XP machine where I am signed onto a local account, I can map a drive to \\serverxxx\GHOST but to access it, I have to enter my domain credentials.
ArneLoviusCommented:
I would guess that your netboot "disk" is using lanman auth, could this have been disabled on the server ?

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KeyrisktechAuthor Commented:
I originally thought that something changed on the server, but after getting the same results mapping to a wide variety of workstations, I have come to the conclusion that the change was of a global nature.  I found today that if I enter the fully qualified domain name  (domainname.ads.companyname.com) that it would accept my credentials, but when I attempted to map a drive with the net use command,  it would ask if I wanted to start the workstation service.  When I answer yes, I would get "Error 36 - The system has detected an overflow in the sharing buffer.
ArneLoviusCommented:
have you tried rebooting the server ?
KeyrisktechAuthor Commented:
Yes.  I wish it was that easy.
ReneGeCommented:
In ref. to http:#37356775
This may help:
If your DHCP is on a Windows 2003 server you need need to disable the Smb signing in your domain controller security settings. Under local policies...security options. Don't forget its the server that need to have the SMB signing deactivated not the client.

Dos networkcard drivers do not support SMB signing, nor does Linux or NT4, so you will be unable to draw an IP. or communicate with the server in anyway.

SOURCE:
http://discussions.virtualdr.com/archive/index.php/t-192276.html
KeyrisktechAuthor Commented:
I'm not having a problem with the DHCP server since I am able to pull an IP address, but would that also apply to the Active Directory server?
ReneGeCommented:
I would need to make more research to answer this, and I'm too busy to do this right now.
What if you try to deactivate SMB signing and try again?
KeyrisktechAuthor Commented:
We ended up using ghostcast to push images since it doesn't require authentication.  Not the ideal solution but it will hold us until migrating to windows 7
KeyrisktechAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for Keyrisktech's comment http:/Q_27511566.html#37449786

for the following reason:

We have spent a lot of time on finding a solution and it is time to cut our losses and move on.
ArneLoviusCommented:
I suggested this in post 37354953 and it was also suggested in post 37368062 by ReneGe, that the "problem" was due to SMB signing, however neither of these were actively replied to by the OP and confirmation was not forthcoming before he presented a "fix" by using an alternative technology.

I am loath to accept that points would be refunded in this situation.
ArneLoviusCommented:
I suggested this in post 37354953 and it was also suggested in post 37368062 by ReneGe, that the "problem" was due to SMB signing, however neither of these were actively replied to by the OP and confirmation was not forthcoming before he presented a "fix" by using an alternative technology.

I am loath to accept that points would be refunded in this situation.
ReneGeCommented:
I agree with ArneLovius.
He did not even say thanks for our time and effort to help ;(
modus_operandiCommented:
I've requested that this question be closed as follows:

Accepted answer: 250 points for ArneLovius's comment http:#a37354953
Assisted answer: 250 points for ReneGe's comment http:#a37368062

for the following reason:

Starting auto-close process to implement the recommendations of the participating Expert(s).<br />&nbsp;<br />modus_operandi<br />EE Admin
KeyrisktechAuthor Commented:
SMB signing had been turned off as we were able to pick up an IP address.  Having said that, ReneGe was the most helpful, and should be assigned the bulk of the points.
ReneGeCommented:
Glad I could help.
Cheers
ArneLoviusCommented:
SMB signing does not affect DHCP
ReneGeCommented:
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