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ISA server initialization

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I setup one W2K Server (W2K domain controller) and one ISA server(on standalone W2K server),I join my ISA server to domain controller, and then run ISA Server Initialization to install ISA Server, the screen shown "ISA Server Enterprise Initialization Tool: The ISA server schema will be installed to the Active Directory.
This action is not reversible. Do you want to continue?" and click OK, then the screen shown "ISA Server Enterprise Initialization Tool - Error: You must be a member of the Enterprise Administrators Group, Schema Admins group and Administrators on the local machine to perform this operation. The program will now exit."
even I create Enterprise Admins Group and Schema Admins Group on ISA Server machine and add my name (Administrator) to these groups, I still got the error message, what did I miss ? Thank you very much.

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by erikdr

You give statements which look conflicting, so maybe you did not fully do what ISA requires.
You tell you 'join the ISA server to domain controller'. That means you make it a member server on the W2K domain of the other server? Or create a new domain?
The requirement for ISA that the ADS domain to which the local machine gives full trust, so either the machine must be a member of that or must be a DC itself, gives you (with your logon credentials) these powers. So also make sure that at the moment of installing you are logged in to this DOMAIN and not to any local SAM.

Hope this helps,

- The Netherlands

by dc1

The user account that you are using to install ISA needs to be in the SCHEMA admins domain group and the Enterprise Admin group for the domain.

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