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Disconnected Mapped drive

Posted on 2007-12-04
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Last Modified: 2012-08-14
All of a sudden, some client xp pro machines on my Win2003 server network are showing "Disconnected Network drive" for mapped drives to the server share.  When they click on the drive, they are able to open the folders and have full access to the files.

What all of a sudden caused this behavior?
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Question by:llampaso
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by:2PiFL
ID: 20408096

Look at your Power Management Settings for your nic.  

Right Click My Computer | Properties | Hardware tab |Device Manager

Right Click | Properties on the nic, Click the Power Management tab.  Uncheck the "allow the computer to turn off this devive"
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by:Rob Williams
ID: 20408174
The drives disconnecting was common on Windows 2000, but the following sometimes applis to XP as well. It seems they automatically disconnect after 15 minutes of activity. Although usually , as you described, as soon as you try to make use of the mapped drive they reconnect instantly, it is disconcerting to see the red x's.

2 methods to apply the "fix":

1) Edit registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters

change Autodisconnect from default 15 min. to longer time period

2) run the following command:
net config server /autodisconnect:-1

The following Microsoft article explains the 2 above options:
http://support.microsoft.com/default.aspx?scid=kb;en-us;297684
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Author Comment

by:llampaso
ID: 20410221
Even after the user accesses the drive, my computer still shows the drive as "disconnected"
We are not seeing a red x on the drive letter.  When user is logging on, in the task bar a message is appearing "Could not reconnect all network drives"  It's strange because one of the drive mappings to the same server is fine, while the second mapping is showing disconnected.
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by:Rob Williams
ID: 20410709
"Could not reconnect all network drives" most often happens when the connection to the mapped drive is not available at logon. Might this be a connection over a slow link like a VPN, or possibly using a wireless connection?
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by:dkieres
ID: 20412271
In my case the OS seems to be automatically mapping all the unused drive letters to the same share. In other words if drives K: L: M: and Q: are legitimately mapped, then the system maps the remaining unused drive letters, say N: O: P: R: ..... Z: to a share and shows the drive as "Disconnected Network Drive N:".

The user can successfully open these mappings which will point to the files in a legitimately mapped drive.
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by:Rob Williams
ID: 20412589
Might be worth clearing out all the drive mappings. Sounds like they may have been mapped at some point and marked as persistent. To so, at a command line enter:
  net  use  /persistent:no
  net  use  *  /delete
This will delete all drive mappings. Only do so if they will be automatically re-created by the server/logon script.

If all available drive letters are being mapped that sounds particularly odd. Using  * implies all, and is used for deletion. I am not sure what would happen if there was an error in the logon script that used a * for the mappings such as:
  net  use  *  \\ServerName\ShareName
rather than:
  net  use  X:  \\ServerName\ShareName

It might map all available drive letters. You might want to double check the logon script to make sure that is not the case.
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by:Matt_Heuer
ID: 20458835
I have had the exact same thing happen at least two of my sites about threee weeks ago.   ( No one made any known changes)  The temporary fix is a reboot of the client and the drives come back as connected.  

Does rebooting the desktops temporarily fix your problem also?  
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Author Comment

by:llampaso
ID: 20467168
Yes, rebooting the pc does temporarily fix the drive mapping problem.

I tried the net config server /autodisconnect:-1 on the xp boxes but it didnt do anything.  Should I do this on the Server as well?  I am reluctant to go into the registry on the server though.

this is only happening on three of my workstations out of 40????  It's a real puzzle.
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by:Rob Williams
ID: 20467285
Shouldn't need to make the autodisconnect changes on the server, just the connecting device.
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by:dkieres
ID: 20468362
It sure is a puzzle - I've tried every recommendation and still the disconnected drives show up. Sometimes it takes a few hours, or days, but they seem to show up eventually.
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by:Rob Williams
ID: 20471530
Sorry, I'm stumped.
I can see a registry entry, or a login script that wasn't removed and pointing to old non-existent shares causing this, but if that were the case it would happen immediately and every time.
Bizarre.
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Author Comment

by:llampaso
ID: 20471709
Well, I guess this is just another one of those Microsoft mysteries.  
I've tried everything as suggested in this forum and on the microsoft site.
Nothing works.
I give up.  Users will just have to live with it.
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by:Matt_Heuer
ID: 20472753
I now have three sites i know of that are experiencing this issue.  

Are you using Symantec AV.
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by:llampaso
ID: 20472829
Yes we use SAV Corporate 10.0
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by:Matt_Heuer
ID: 20472942
Symantec will acknowledge that there is a known problem with the 10.0 version.  

When we first noticed this happening we upgraded one site to 10.1.5.  No fix.

I then contacted Symantec and was advised to upgrade to an even newer version.  So i did Upgraded to version 10.1.6.  No fix.

Symantec then had me disable network scanning from the clients.  No fix

I now have a registry change they want me to deploy to the client.

I will let you know how that goes.
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Expert Comment

by:DShapiroBarronCollier
ID: 20484490
has anyone had any success with solving this issue? we are experiencing both the random disconnects, and now all unused drive letters being mapped.

have tried all proposed fixes here, including updating symantec AV to 10.1.6 and disabling network scanning.

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by:Mr-IT
ID: 20509823
We are having this exact problem and we can't find either a cause or a fix. Does anyone know WHAT's happening here? Better yet, does anyone know the fix?

BTW, the "net use * /delete" fix doesn't work because these "mystery" drive mappings don't show up at the command line. They only appear in the GUI.

For example doing a "net use" only shows the legitimate drive mappings that we create via our logon script. These mystery drives don't echo back.

Any help is appreciated y'all - we're so frustrated that we're actually paying to be on this forum! Now THAT is an act of desperation for us!!!

;-)

/fwa
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Expert Comment

by:dollarbud
ID: 20511698
I am having the same problem, multiple "disconnected network drive" using all remaing drive letters on the windows XP system... this is happening with two different clients i support... I can't seem to find anything searching the internet!
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Author Comment

by:llampaso
ID: 20570076
I am closing this question as nothing seems to be working as posted.
Thanks for all the input.
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Expert Comment

by:mjwinters
ID: 20576306
What I have done to fix this issue is to add these lines to the beginning of our users' logon script:

NET USE /persistent:no
NET USE * /delete /y

So now our typical logon script looks like this:

NET USE /persistent:no
NET USE * /delete /y
NET USE F: /DELETE
NET USE G: /DELETE
NET USE H: /DELETE
NET USE F: \\SRV2\FILES
NET USE G: \\SRV2\PROG
NET USE H: "\\SRV2\FILES\HOME\%USERNAME%"
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Expert Comment

by:docutechPA
ID: 20733382
Having the Same issue but with one mapped drive - I can acces the drive map but its labeld on the workstation under My PC as "Disconnected Network Drive" yet I can drill into any folder under this M: drive with no issue.

The only thing I can think here is that the profile might be corrupted somehow. This issue came about when we upgraded the PC (not the OS) and copied the profile from the old to the new instead of just creating a new profile. However, the message "Disconnected Network Drive" comes up no matter who is connected - Admin, users, etc.
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Expert Comment

by:Mr-IT
ID: 20733722
This problem was resolved, we think, by a Windows Update patch of some kind. It suddenly just went away and the only thing that we can think of is that Microsoft quietly fixed in a patch and then pushed it out via the Microsoft Update/Windows Update sites.

Thanks for your help everyone!

/fwa
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Author Comment

by:llampaso
ID: 20742716
Mr. IT  ........Ditto for us too!.

Just checked the problem pc's again and the problem seems to be gone.
It had to be an update from Microsoft that fixed it.  We are set up to get auto updates from Ms as well.
Thanks to everyone for all their help!
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by:Rob Williams
ID: 20744193
Glad to hear you were both able to resolve, and thank you for updating.
Cheers !
--Rob
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Accepted Solution

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docutechPA earned 0 total points
ID: 20749770
Fixed my own issue after checking and rechecking settings I realized that the drive works no problem after each and every reboot. So I went to the drive and in starring at it for a bit I tried to rename the M:\ (disconnected mapped drive) as if it were a folder - right click - rename and I erased (disconnected mapped drive) - I typed the name of the share M:\ MLSROOT on DPC-DC and tada!! It worked. Rebooted and tested several user logins. Its fixed!
Somehow the name of the drive was changed to disconnected and for some reason it would not change it. I tried every suggestion with no avail.

Thanks for you help but I seemed to conquer this one myself.
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by:Vee_Mod
ID: 20780439
Closed, 125 points refunded.
Vee_Mod
Community Support Moderator
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