Ronald
2009-03-15 23:16:01 UTC
I am getting an unpredictable results when attempting to connect to a DFS
directory. I also have intermittent issue where DFS root cannot be mapped.
Help needed
Problem Description:
Intermittently unable to access or map to DFS root
e.g. \\domain\dfs
Cannot access DFS root from Start > Run >
Error message:
You might not have permission to use this network resource. Contact the
administrator of this server to find out if you have access permissions.
or
The file does not have a program associated with its performing action
When performing a mapping, it keeps prompting for password which is
definitely valid.
I need the unc name to work reliably becasue there is going to be an app on
the W2K3 box that needs to go to this path to grab a file on a time sensitive
basis. Would be great if someone can share why some clients have this issue
where some don't.
Have done extensive research and followin gare some further information
Following are some action I have taken for your further recommendation.
1. Compared the IP configuration between 2 machines, (Can access DFS root
versus cannot access)
a. DNS settings, suffixes are the same
b. Change IP address to the same subnet
c. Repair Network card and disable Windows firewall
2. Reset AD password and restart machine a few times using both CTRL ALT DEL
method or from AD tool
3. Disable any Anti vrius programs
4. Run Set L command to determine authentication domain controller
a. Clients are authenticated either Domain01, Domain02 machine
b. Restart PC and logon again, each time it may be authenticated by
different Domain controller (01 or 02), but no specific trend was detected
for PCs without
None of above works
Then restarted machine many times and for once , the DFS root is accessible
with no changes to any settings. The DC authenticating the machine is the
same as the earlier one which forbidden access to DFS root.
Continue to restart machine, trying to replicate the error and problem came
back intermittently without any specific trend.
Questions:
1. We had about 7 replica servers with 14 folders with targets, and we have
setup referral is base on lowest cost, how does a machine knows which DFS
servers to connect when performing a \\domain\dfs command?
2. I tried running the DFS tool > Check Status on 1 of the DFS server. Some
root target are listed as offline. From some desktop client I can still
access the path by using \\servername\dfs even it is shown as offline but
from the DFS server, using the open function I am getting failed to launch
explorer homed at \\servername\dfs
What does it mean?
3. Not sure if any settings related to DFS property. Following are the name
space setup from the DFS management screen > DFS Root Properties >
General - Nothing paticular
Referrals -
- Cache duration = 300
- Ordering Method = Lowest Cost
- Client Fail back to preferred targets = CHecked
Advanced >
Optimize for consistency is selected.
What does optimize polling means and shall it be scalability or consistency?
Appreciate some help from the tech net team
directory. I also have intermittent issue where DFS root cannot be mapped.
Help needed
Problem Description:
Intermittently unable to access or map to DFS root
e.g. \\domain\dfs
Cannot access DFS root from Start > Run >
Error message:
You might not have permission to use this network resource. Contact the
administrator of this server to find out if you have access permissions.
or
The file does not have a program associated with its performing action
When performing a mapping, it keeps prompting for password which is
definitely valid.
I need the unc name to work reliably becasue there is going to be an app on
the W2K3 box that needs to go to this path to grab a file on a time sensitive
basis. Would be great if someone can share why some clients have this issue
where some don't.
Have done extensive research and followin gare some further information
Following are some action I have taken for your further recommendation.
1. Compared the IP configuration between 2 machines, (Can access DFS root
versus cannot access)
a. DNS settings, suffixes are the same
b. Change IP address to the same subnet
c. Repair Network card and disable Windows firewall
2. Reset AD password and restart machine a few times using both CTRL ALT DEL
method or from AD tool
3. Disable any Anti vrius programs
4. Run Set L command to determine authentication domain controller
a. Clients are authenticated either Domain01, Domain02 machine
b. Restart PC and logon again, each time it may be authenticated by
different Domain controller (01 or 02), but no specific trend was detected
for PCs without
None of above works
Then restarted machine many times and for once , the DFS root is accessible
with no changes to any settings. The DC authenticating the machine is the
same as the earlier one which forbidden access to DFS root.
Continue to restart machine, trying to replicate the error and problem came
back intermittently without any specific trend.
Questions:
1. We had about 7 replica servers with 14 folders with targets, and we have
setup referral is base on lowest cost, how does a machine knows which DFS
servers to connect when performing a \\domain\dfs command?
2. I tried running the DFS tool > Check Status on 1 of the DFS server. Some
root target are listed as offline. From some desktop client I can still
access the path by using \\servername\dfs even it is shown as offline but
from the DFS server, using the open function I am getting failed to launch
explorer homed at \\servername\dfs
What does it mean?
3. Not sure if any settings related to DFS property. Following are the name
space setup from the DFS management screen > DFS Root Properties >
General - Nothing paticular
Referrals -
- Cache duration = 300
- Ordering Method = Lowest Cost
- Client Fail back to preferred targets = CHecked
Advanced >
Optimize for consistency is selected.
What does optimize polling means and shall it be scalability or consistency?
Appreciate some help from the tech net team