one pc to join two domains

Microsoft Windows server 2008 standard -...
July 19, 2010 at 06:58:09
Specs: Win XP Pro
Hello everyone,

I have one PC (Win XP Pro) that needs to join two domains at different times, not both at the same time. Let me explain the setup...

The office has two server s(A) and backup (B). Server A is a domain, server B was a backup using NASfree. I was asked to two turn server B into a domain so I went ahead and installed Win Server 2008 as an exact copy (users and computers) as server A. I am using server A as DHCP. These are simple file share servers.
I cannot see the new domain, server B when I try to logging from one the workstations.



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July 19, 2010 at 08:54:32
You can not join two domains with one pc.

You can virtualize a second desktop that can on that unit join another domain.

It is unclear exactly what you did concering the second server install. If a new domain was it in the existing forest? A new domain would not have had the exact same users so that part of your post is vague.

What exactly did you do?

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July 19, 2010 at 09:34:54
There is an existing forest/domain (, server A). The company is splitting in two and they want to use what was the backup server (server B) as a new domain. I setup the new server as in a new forest (wich I think I should not have done). In the workstations I can see and loging to it but not

...your thoughts

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July 19, 2010 at 09:56:44
If the company is splitting than you did it correctly with the new forest.

You need a forest to forest trust if you wish to access resources from the resource domain from the trusting domain.

Web search forest to forest trust.

Or, if you just want your workstation to access you can do the virtualized desktop or join this new domain with your workstation [you won't have access to the old domain]

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July 19, 2010 at 11:13:55
Great! I will keep you posted on the outcome. Thanks for your help.


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September 13, 2010 at 15:28:05
yea just use the forest trust and join the pc to whichever domain you want. You will then be able to access resources from both domains. only limitation is that if you are using sbs 2008, it does not allow trusts. Virtual will work but you have to train the end user on how to use it and exchanging files between the virtual pc and the regular pc is easy to me but I have had end user get confused. I only use virtual pc for old legacy stuff that doesnt work on windows 7. I just install virtual xp then install the legacy software on that and it works fine.

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