I am redirecting several folders using Group Policy. Everything works as expected on Windows XP clients, but on a Windows Vista client, some of the folders redirect, and some of them fail to redirect. For the ones that fail, the following event (with identifying information altered) is logged:
Log Name: Application Source: Microsoft-Windows-Folder Redirection Date: 5/14/2009 2:34:38 PM Event ID: 502 Task Category: None Level: Error Keywords: Classic User: CORP\username Computer: machinename.corp.mycompany.com Description: Failed to apply policy and redirect folder "Desktop" to "\\corp.mycompany.com\net\users\desktop\username". Redirection options=1001. The following error occurred: "Can not create folder "\\corp.mycompany.com\net\users\desktop\username"". Error details: "This file is currently not available for use on this computer. ".
I have made sure that there is no pre-existing folder with the name in question, so that I can be sure that Windows creates the folder with the permissions that it wants. I set up my permissions on the parent folder using TechNet's guidance, and I can manually create the folder in question using the command prompt while logged on as the user in question.
Why is this failing? What possible causes should I look for?
EDIT: I tried Zoredache's suggestions, and the alternate test GPO and redirected folder share worked. I then switched back to my original location, turned on auditing, and monitored with ProcMon on the client side, and everything worked fine. Our file server that hosts redirected folders is a virtual machine, and I turned off a couple of other virtual machines on the same host at the same time that I switched to the new redirected folder share. This was foolish, because now I don't know if there was a resource issue on the virtual machine host that was causing the problem, or if there is a Heisenbug--a bug that disappears when I audit and monitor the redirected folder-creation process. Although I do not have any evidence that Zoredache's suggestion resolved my particular issue, I recognize that it is excellent advice, and I am going to mark it as the accepted answer.