Dear all,following situation:we created for testing a second OAB..test was sucessfully and then we deleted the new OAB...but now under ESM - Public Folders - System folders both OABs are visible...when we try to delete the new one, everytime a username and password is required..we are full domain and exchange admins, but we cant delete the OAB...is the only way ADSIEdit?regardsEnvironment: Exchange 2003 native, W2k3-DC

I believe the new one would get deleted once the online maintenance is completed.

I agree with Nair.SS.Store Background Processes Part I - IS Maintenance http://blogs.msdn.com/jeremyk/archive/2004/06/12/154283.aspxBesides, I recommend you to use OABInteg to check the issue again.Description of the Offline Address Book Integrity (OABInteg) toolhttp://support.microsoft.com/kb/907792OABInteg and how to use it to troubleshoot OAB generation issueshttp://blogs.msdn.com/dgoldman/archive/2005/08/28/oabinteg-and-how-to-use-it-to-troubleshoot-oab-generation-issues.aspxRegards,Xiu