On the Instance Name page, you must provide an easily recognizable name for the Active Directory Lightweight Directory Services (AD LDS) instance that you are installing. This name is used on the local computer to uniquely identify this AD LDS instance.

The name that you specify appears in the following places:

  • Event Viewer

  • Services snap-in

  • Add or Remove Programs


The Active Directory Lightweight Directory Services Setup Wizard presents a default instance name of instanceX, where X equals 1 for the first AD LDS instance that is installed on the computer, 2 for the second AD LDS instance that is installed on the computer, and so on.

The name that you specify must meet the following requirements:

  • It must be unique with respect to other AD LDS instances running on the same computer.

  • It must be no longer than 44 characters.

  • It must use characters only from the ranges of a through z, A through Z, or 0 through 9.

  • The name "ntds" cannot be used.

The instance name that you specify is used to construct the service name, the service display name, and the service description, as described in the following table.

Name supplied during setup Service name Service display name Service description




Blank (No default description is provided.)

Additional references

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