I'm trying to enable the active directory recycling bin with ldb.exe. I'm working in a lab environmental with a fresh install of Server 2008 R2 Standard. Only account is the administrator account. I'm input the following input for the Modify box DN: (Blank) Edit Entry Attribute: enableOptionalFeature Values: CN=Partitions,CN=Configuration,DC=XXXX,DC=local:766ddcd8-acd0-445e-f3b9-a7f9b6744f2a Operation: Add I get the following error ***Call Modify... ldap_modify_s(ld, '(null)',[0] attrs); Error: Modify: Unwilling To Perform. <53> Server error: 00000057: LdapErr: DSID-0C0420CC, comment: Error in attribute conversion operation, data 0, v1db0 Error 0x57 The parameter is incorrect. ----------- I got the same error trying to raise the forest function level but I checked and the value of msDS-Behavior-Version was already 4.Ben Rainville Recurve IT Solutions www.RecurveIT.com

Hello, did you follow this way: http://technet.microsoft.com/en-us/library/dd379481(WS.10).aspx And make sure to use an elevated command prompt when using ldp.exe. Personal i like the powershell way.Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.