Folder redirection intermittent after server upgrade

We have 2 DFS servers on one AD site. One was Windows 2008 and the other Windows 2003 R2. We upgraded the 2008 (C:) to 2008 R2 but left the (D:) data drive intact.
Ever since, folder redirection for Desktops and Desktop Wallpaper and the users home folder (H:) don't always apply. Logon sometimes takes up to 6 min.  After this 6 minutes, Event Viewer shows 502 warnings and 510 errors relating to the folder redirection Group policy not being applied - until next logon.

Network speed is generally good. dfsdiag and dnsdiag don't show anything obvious.. we've disabled any scripts that could slow logon.

Any help would be greatly appreciated..

Thanks

Mat
matedwardsAsked:
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bbaoIT ConsultantCommented:
is the drive C a bootable primary partition?

have you ever observed any drive letter change after switching from W2K8 to W2K8R2?

> Ever since, folder redirection for Desktops
and Desktop Wallpaper and the users home folder (H:) don't always apply.

any to-be-redirected folder is on drive D? any more other drives between D and H?

> Logon sometimes takes up to 6 min.

sometimes? you mean happened randomly?

> After this 6 minutes, Event Viewer shows 502 warnings and 510 errors relating to the folder redirection Group policy not being applied - until next logon.

the event log details please?
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matedwardsAuthor Commented:
Yep the C: drive of the server is the bootable partition and the D: drive is the server Data partition (where users redirected home folders reside).

We haven't observed any drive letter changing after the upgrade.

The H: drive is the letter given to the users home folder in ADU&C.. there are no other drive letters.

Yep.. 6 min logons are random.. when the logons drop to an acceptable 20-40 seconds then all folder redirection applies and the users H: drive are mapped ok.

Event ID 510: Folder redirection policy application has been delayed until next logon because the group policy logon optimization is in effect.

Event ID 502: Failed to apply policy and redirect folder "Documents" to "%HOMESHARE%\Users\matedwards".
Redirections options=0x80001000.
The following error occurred: "".
Error Details: "The specified path is invalid.
".

Event ID 6006: Winlogon
The winlogon notification subscriber <Profiles> took 290 second(s) to handle the notification event (logon).
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gurutcCommented:
Hi,  

You may need to mitigate or disable slow link detection.

1. Login to the target system as admin or run a cmd console as admin
2. cd to c:\windows\system32
3. run mmc gpedit.msc as admin
4. in both Computer Configuration and User Configuration, go to Administrative Templates
5. go to System, Group Policy
6. Double click the GP Slow Link Detection
7. Enable the policy and set it to 0 ( zero ) to disable “Group Policy slow link detection”  or set the link rate to a slower link speed so the policies will be applied on this link.

- gurutc
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matedwardsAuthor Commented:
Thanks gurutc

I have disabled slow link detection as per your instructions. Won't that now ignore any GPOs that haven't been applied.?

Many thanks

Mat
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gurutcCommented:
Well the problem may be that the GPO setting to disable slow link detection may not push to PCs that don't have slow link detection disabled yet.  You may need to go into local security policy or do this from Microsoft:

If you are trying to disable slow link detection when Group Policy is not applying (and therefore, you cannot configure the policy setting), you can manually create the registry value "GroupPolicyMinTransferRate" (DWORD) under the following keys and set each of them to 0.

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon

    HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Winlogon

- gurutc
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matedwardsAuthor Commented:
thanks gurutc..

We are still seeing the intermittent folder redirection problem.

I've noticed it can happen when hardly anyone is on the network.. so I think that would rule out any latency issue..

thanks again

Mat
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matedwardsAuthor Commented:
I apologise.. the problem persists and we're no closer to a solution.. thank you for your help but I will close this question.
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matedwardsAuthor Commented:
Question unresolved
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matedwardsAuthor Commented:
We had to wipe and rebuild the Windows 2008 R2 file server that contained the users Home folders. It had crashed and the system drive was unrecoverable. We even gave the server a completely different name and removed any reference to it in AD, DNS and DFS. The problem, listed above, now seems to have disappeared..!
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