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Accessing AD with Windows 98 clients on Exchange 2003

Can Windows 98 client machines attach to an Exchange Server 2003 in mixed mode Active Directory, since they do not participate in Active Directory unless they have the Active Directory client software on them?

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I don't exactly understand if you've had an issue with Windows 98 clients. As long as the domain has a primary domain controller emulator, it shouldn't matter that you have Windows 98 clients still on the network.

I would consider an upgrade, since support for Windows 98 must be difficult by now. Windows doesn't need to talk to Exchange, but various versions of Outlook have different requirements. I found two links that might provide more pertinent information to your question:

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Related information from

  • Tip: E-mail client discrimination
  • Expert Advice: Outlook Web Access conflicts
  • Resource Center: Active Directory tips and resources

  • This was first published in January 2006

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