Microsoft Windows Network: The local device name is already in use.

Question

I posted in : http://answers.microsoft.com/en-us/windows/forum/windows_7-networking/disconnected-network-drive-error-as-follows-an/9a877c38-5e86-4c34-84c2-427a965577c6?page=2
Error:
"An error occurred while reconnecting drive letter to \\network server\share folder.
Microsoft Windows Network: The local device name is already in use.
This connection has not been restored."
1) A workstation is running Windows 7
2) The user has a drive letter mapped to a UNC
3) The connection is interrupted at some point and then restored
4) Upon attempting to access the mapped network drive, the user gets the error about the letter being
already in use.
Extremely disappointed that some of the posts marked as answers were obviously not, shows how poor the moderators here are.
My latest results clearly point to a Windows 7 client problem:
I received the error.
Had run nslookup so had a prompt open.
ran dir z:    worked. went to Windows Explorer, same error.
ran dir z:\sharename    worked. went to Windows Explorer, same error.
copy con z: test.txt then type test.txt; could create and retrieve file. Went and clicked on mapped drive in Windows explorer and received same error.
Obviously(?) not a Server or Networking problem. Ran Malwarebytes from bootable CD (client doesn't believe in AV). Didn't happen with USB flash drive.
Any other ideas?
I already have tried:
support.microsoft.com/kb/317021
http://support.microsoft.com/kb/303339
ftp://ftp.microsoft.com/misc1/BUSSYS/WINNT/KB/Q194/8/29.TXT
http://support.microsoft.com/kb/273151 Exchange issue
http://support.microsoft.com/kb/2663418   hotfix for win7
http://social.technet.microsoft.com/Forums/en-US/w7itpronetworking/thread/78276f1d-f7f9-416b-b903-
b9a18ecba67b/
http://support.microsoft.com/kb/297684
Ran  MicrosoftFixit50494.msi
net use z: \\SERVER\ShareFiles /persistent:yes
http://support.microsoft.com/kb/2663418
http://support.microsoft.com/kb/297684#LetMeFixItMyselfAlways
http://support.microsoft.com/gp/gp_fixit_windows/en-us
http://support.microsoft.com/mats/windows_battery_power_settings
http://support.microsoft.com/kb/979470/en-us ???
http://support.microsoft.com/kb/947235/en-us
http://msdn.microsoft.com/en-us/library/cc232765.aspx
http://support.microsoft.com/kb/942817
Q939820? server 2003 sp3 Fix226580  341940_ENU_i386_zip.exe
http://support.microsoft.com/kb/983620
http://support.microsoft.com/kb/297684
net config server /autodisconnect:-1
KB Article Number(s): 2663418 Hotfix
http://support.microsoft.com/kb/983620
http://answers.microsoft.com/en-us/feed/t/9a877c38-5e86-4c34-84c2-427a965577c6
http://answers.microsoft.com/en-us/feed/t/9a877c38-5e86-4c34-84c2-427a965577c6
net use z: \\SERVER\1_CADFiles /persistent:yes SBS2011 Server with current service packs
Win7 Pro users with current Windows Update status
http://support.microsoft.com/kb/2663418
http://support.microsoft.com/kb/297684#LetMeFixItMyselfAlways
http://support.microsoft.com/gp/gp_fixit_windows/en-us
http://support.microsoft.com/mats/windows_battery_power_settings
http://support.microsoft.com/kb/979470/en-us ???
http://support.microsoft.com/kb/947235/en-us
http://msdn.microsoft.com/en-us/library/cc232765.aspx
http://support.microsoft.com/kb/942817
netsh winsock reset catalog
netsh int ip reset reset.log
Q811259
Q299357
Q937624
secpol.msc >> Lanman authentication level  "send LM and NTLM"
net config server /autodisconnect:-1
changed server video to "standard vga"
disabled power save for NIC
Cannot disable Intell Raid software
http://technet.microsoft.com/en-us/library/cc780360%28v=WS.10%29.aspx   restart
http://technet.microsoft.com/en-us/library/bb726989.aspx browse list
Q138365
net config server /autodisconnect:-1
two additional registry keys are added:
anndelta: REG_DWORD: 0xbb8
announce: REG_DWORD: 0xf0
netsh winsock reset
netsh interface ipv4 reset
netsh interface ipv6 reset
ipconfig /flushdns  
shutdown /r
sfc /scannow
http://support.microsoft.com/kb/929833
 http://social.answers.microsoft.com/Forums/en-US/w7network/thread/306dd446-7630-4d5b-8aa0-
40fb839b293a     dns issue
http://answers.microsoft.com/en-us/windows/forum/windows_7-networking/i-have-this-problem-on-three-
win7-x64-systems-two/d44ed544-65f5-43a7-9e17-d2d10085c765?page=2
Leftover Homegroup components or Firewall?
disable DNS Client = dnscache
http://answers.microsoft.com/en-us/windows/forum/windows_7-networking/service-control-manager-reports-
that-a-timeout/e2e76ae5-ed09-4685-af86-5f8c2cd120bf     Norton Internet Security uninstall issues
http://answers.microsoft.com/en-us/windows/forum/windows_7-networking/windows-7-no-dns-or-no-network
-after-resume-wake/c1253ab0-4793-449e-8975-a900ce7dec4f
NSLOOKUP
KB Article Number(s): 983620 Hotfix

Answer 1

This is usually because the drive letter assigned to the network share is taken by something else. Maybe, by a removable drive.
Moderators and other answerers do their best to help specific cases, but everyone has their own situation.  Apply common sense to the replies you find in the forums.
When you typed dir z:  - is Z: the drive letter you wanted for this share, or it was automatically assigned?
-- pa
Alternatively you could try using common sense when you post, as well as taking the time to read the entire issue post so that you can avoid showing both your ignorance and arrogance (arrogance without any competency to back it I might add).
Suggesting that it might be "another drive" that took over the mapping shows your lack of reading comprehension and is unhelpful.   Please take the time to, once again, read first.
Lastly moderators here generally show little technical skill beyond entering search words into a knowledge-base of articles and then applying the results incorrectly further exacerbating the situation for the customer.