Consider the following scenario. You add the showInAddressBook attribute manually to a mailbox in a Microsoft Exchange Server 2010 Service Pack 1 (SP1) environment. You do this so that the mailbox can appear in certain address lists. You run certain commands on the mailbox, such as the Set-Mailbox command, or the Move-Mailbox command. In this scenario, the mailbox does not appear in certain address lists.
This issue occurs because the address lists entries are removed incorrectly from the showInAddressBook attribute in Active Directory directory service.
To resolve this issue, install the following update rollup:
2608646Description of Update Rollup 6 for Exchange Server 2010 Service Pack 1 Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
After you install the hotfix package, to have us disable the address lists update for you, go to the "Fix it for me" section. If you prefer to disable the address lists update yourself, go to the "Let me fix it myself" section.
Fix it for me
To disable the address lists update automatically, click the Fix it button or link. Then click Run in the File Download dialog box, and follow the steps in the Fix it wizard.
This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
If you are not on the computer that has the problem, save the Fix it solution to a flash drive or a CD and then run it on the computer that has the problem.
Then, go to the "Did this fix the problem?" section.
Let me fix it myself
After you install the hotfix package, follow these steps to disable the address lists update:
Click Start , type regedit in the Start Search box, and then press ENTER.
Locate and then click the following registry key:
Click Edit, point to New, and then click DWORDValue, type DisableALUpdate, and then press ENTER.
Right-click DisableALUpdate, and then click Modify.
In the Value data box, type 1, and then click OK.
Exit Registry Editor.
Did this fix the problem?
Check whether the problem is fixed. If the problem is fixed, you are finished with this section. If the problem is not fixed, you can contact support.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
You can use the Active Directory Service Interfaces Editor (ADSI Edit) to copy the distinguishedName attribute of the address lists to the showInAddressBook attribute of the mailbox in Active Directory.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2484817 A mailbox does not show in certain address lists after you run commands on an Exchange Server 2007 mailbox