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Workgroup Manager showing 1000 results only

Today at work we had an issue where our snow leopard Mac server was only showing the first 1000 users in Workgroup Manager. This was obviously a problem as we have more than 1000 users in out Active Directory. This also caused an issue when trying to set permissions for a particualar file, as all the users are not displayed on the userlist.

So, to workaround this 1000 user limit issue we had to change the number of records that Active Directory places in 1 page. Active Directory by default will place 1000 users on one page, then any additional users on the next page and so on… Workgroup Manager does not understand this paging system very well so it only displays the first page.

What you will need to do is go on to your AD server and run the ntdsutil util. Here are the steps

To start Ntdsutil.exe

Click Start, and then click Run.In the Open text box, type ntdsutil, and then press ENTER. To view Help at any time, type ? at the command prompt.
To view policy settings

At the Ntdsutil.exe command prompt, type LDAP policies, and then press ENTER.

At the LDAP policy command prompt, type connections, and then press ENTER.

At the server connection command prompt, type connect to server , and then press ENTER. Connect to the server that you are currently working with.

At the server connection command prompt, type q, and then press ENTER to return to the previous menu.

At the LDAP policy command prompt, type Show Values, and then press ENTER.

To change policy settings

At the Ntdsutil.exe command prompt, type LDAP policies, and then press ENTER.At the LDAP policy command prompt, type Set MaxPageSize to 2000, and then press ENTER.

You can use the Show Values command to verify your changes.

To save the changes, use Commit Changes.

When you finish, type q, and then press ENTER.

To quit Ntdsutil.exe, at the command prompt, type q, and then press ENTER.

Steps taken from Technet

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