On 3/31/2012 4:37 PM, Thomas Smith wrote:
> Hi,
> 
> We're in the process of deploying the 1.7.8 client (with IFS) to all of our 
> workstations, some are upgrades from 1.5.x and some are new installs. We've 
> noticed a problem with using UNC paths on both Windows XP Pro and Windows 7 
> Pro. This problem presents itself in slightly different ways between the two 
> Windows version but is consistent and occurs on every single machine. Here's 
> description of the problem...
> 
> Windows XP Pro
> Users are seeing delays when browsing AFS via UNC paths--that is, they browse 
> to AFS and it will take, typically, 5 to 10 seconds before they can click on 
> anything in a given directory or change to another directory or open a file, 
> etc.
> 
> Windows 7 Pro
> When right-clicking in Windows Explorer, when viewing the AFS file space via 
> UNC, to, for example, create a new folder, there's about a 10 second delay 
> before the menu comes up to allow selecting the option to create a folder or 
> file.
> 
> When performing both of these operations on a network drive mapped to an AFS 
> cell, the problems are not present--everything works as expected.
> 
> Might this be something with our configuration or is this possibly a bug in 
> 1.7.8? Please let me know if I can provide any additional information and I 
> will.
> 
> Thank you,
> 
> ~ Tom_

If you Wireshark you will find Windows performing a network browse for
the "AFS" netbios name.  The fact that Explorer is triggering this
search when the "AFS" name is registered with the Multiple UNC Provider
is a bug in Windows.   It doesn't happen in all environments and I don't
have a workaround.

Someone with a support contract with Microsoft and a willingness to pay
the root cause investigation expenses is welcome to open a support
incident with them.

Jeffrey Altman

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