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"Local device name already in use" error


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JT Cole's Avatar
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20-Oct-2004, 12:28 PM #1
"Local device name already in use" error
I am at work on a new computer running XP Service Pack 2 and I'm having problems connecting to our server. When I try to go to these drives I get the message "Local device name is already in use. " "This connection cannot be restored." These shortcuts worked yesterday which was the first day I hooked this computer up, now they don't for some reason. Our "IT" people don't know a whole lot because they are really just our accounting department so I'm trying this route. Also, I can still access the internet and email which is routed through our network just not the network drives.
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20-Oct-2004, 05:26 PM #2
Did you disconnect the laptop from the network, put it in standby mode or hibernate, (for instance to take it home), then come in and simply reattach and unlock the computer? If so, the Domain Controller (aka Active Directory Server) has probably forgotten your credentials. Try to logout, then log back in, or deleting the shares and reconnecting to them sometimes works as well. If those don't work, try rebooting.

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20-Oct-2004, 07:04 PM #3
Sounds like the computer is trying to map a drive that already exists. Go to, "My Computer" then look at the drives there. If any of them have a red X right click them and click disconnect.
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21-Oct-2004, 06:02 AM #4
I already rebooted and logged out and back in and all that but none of it worked. This is not a laptop, its just a regular desktop computer. Also, I checked to make sure that no local drives had the same drive letter as the drives on the server. I suspect that it is something along the lines of the server forgetting my credentials, so how can I fix that?
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21-Oct-2004, 06:19 AM #5
One more thing I have tried that I thought I should mention. I disconnected from the drives and was going to re-map them. When I went to My Network Places I get an icon for our local group but no drives. Since their are no drives to map, I can't re-map them. I guess that makes sense since I can't connect, but this is almost like I'm not really logged on to the server. When I start up I log on as usual and I get no error messages or anything but something is definitely not right.
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21-Oct-2004, 09:44 AM #6
You don't have to see the drives in order to attempt to map them, you just need either the server name and share name or the ip address and share name.

You might try "finding" the machine name that the drives are on, if you can find it, the drives should show up...

But, if you're supposed to be logging into a domain, but you're currently not, then I'd say you need to contact the admins, and get that box to login to the domain correctly.

-Scott
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21-Oct-2004, 10:58 AM #7
You may have a cached session on the server still. Disconnect or turn off problem PC.

Logon to server, control panel-->admin tools-->computer management-->shared folders-->sessions. See if your computer name is in there, if so, right click and disconnect. Refresh(Hit F5 key) and connect PC back to network.
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21-Oct-2004, 11:11 AM #8
OK thanks for the info, I'm gonna give that a shot
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22-Oct-2004, 01:18 PM #9
OK, the network administrator removed me from our network as a user then re-added me. Then, she logged me on from a 98SE computer on the network and it worked fine, I could get to the server drives and network printers just fine. However, when we tried to get to these resources on my XP system it wouldn't work. We tried to remap them through My Network Places but oddly when we went into the Entire Network ---->Microsoft Windows Network----->(our local server name) there was nothing. The computer names that should have shown up under our local network were not there. At startup, I logged on with my normal network password and didn't get any error messages, but for some reason I don't see any of the other machines on our local network. Whats up with that?
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22-Oct-2004, 01:43 PM #10
Is your firewall enabled? Check Control Panel-->Windows Firewall and go to tab marked "Exceptions" and check that File and Printer Sharing is checked (allowed as an exception). You could also just disable the firewall.
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22-Oct-2004, 06:19 PM #11
The error "Local device name is already in use" simply means that you are trying to map a network connection with a drive letter that already is assigned to some local device.

That is why logging in on another computer worked. It didn't have the same local devices as your computer.

You need to have your network administrator see what drive letters are trying to mapped, which local device already has one of those letters assigned, and give it a different local drive letter.
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25-Oct-2004, 06:16 AM #12
I have heard that this error should be because a local drive has the same drive letter as network drive and therefore the network drive cannot be mapped but I don't think thats the problem here. I only have A, C, & D drives on my system (No partitions, removeable drives, etc) The network drives are supposedly S, P, and U.
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25-Oct-2004, 08:00 AM #13
Is the computer also trying to run a logon script that would make a network connection for one that is already there.

For example, if a drive letter is mapped through the Windows Explorer, and then the same drive letter is trying to be mapped through a logon script, you can get the same error.
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25-Oct-2004, 08:28 AM #14
OK that is a little bit over my head I think but it sounds like you might be on the right track. I do login to the network at startup and sometimes there is an error *before* I login when the login screen is up that says something like "A duplicate name exists on the server." Does that sound like about what you're talking about?
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25-Oct-2004, 08:34 AM #15
Exactly.

An easy way to test this out and hopefully solve the problem (assuming you have a login script running) is to:

1. Open the Windows Explorer
2. Tools / Disconnect Network Drive
3. Note all the drive connections you have (just in case there isn't a login script)
4. Remove them one at a time
5. Log off and back on again
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