Last Updated on Thursday, 24 January 2013 12:35 Published on Wednesday, 14 April 2010 11:27
I had issues with mapped drives on Windows 2003 server from Windows 7 workstation.
Drives are still visible in windows explorer, but an icon has red X over it. Once you try to double click the drive, the following error occurs:
"Error occured while connecting to \\server\drive, Microsoft Windows Network: The local device name is already in use."
To restore the connection, I had to reboot the PC. Nothing else worked, like trying do disconnect the drive and map it again, or even a logoff.
To resolve this issue do the following on your Windows 7 machine:
- Open Control Panel | Administrative Tools | Local Security Policy ( or hit Win orb and type 'secpol.msc')
- In the left pane, expand Local Policies | Security Options
- In the right pane locate and open "Network security: LAN manager authentication level"
- In the drop-down box select "Send LM & NTLM responses".
- Click Ok
Problem should be resolved now.