Top 5 Ways to Fix the Local Device Name Is Already in Use Error on Win­dows 10

Eunice Njuguna

Windows lets you map network drives to skip typing the address every time you want to use them. And there are times you get the 'local device name is already in use' error. The problem mostly occurs if there are issues with the file and printer sharing settings and unassigned drive letters. Luckily, there are a few ways to fix it.

Fix the Local Device Name Is Already in Use Error on Windows 10

There are several causes of the error. The most common ones are:

  • Unassigned or wrong drive letters.
  • Disabled file and printer sharing options.
  • Insufficient disk space in the network server.
  • Problems during the mapping process.

We have compiled solutions to fix the 'local device name is already in use' error on Windows 10.

1. Assign or Change Drive Letter

A missing or wrong drive letter can cause the 'local device name is already in use' error on Windows. To assign or change the drive letter, follow this process.

Step 1: Right-click on the Windows Start button, locate Disk management, and click on it.

Disk management Windows 10

Step 2: When the Disk Management window opens, locate the partition you want to change the letter of, and right-click on it.

Step 3: Select, Change Drive Letter and Paths.

Change Drive Letter and Paths Disk Management

Step 4: On the next window, click Add.

Add Drive Letter and Path Windows 10

Step 5: Select Assign the following drive letter and choose a preferred drive from the drop-down menu. Press OK to update the changes.

Assign this drive letter Windows 10

Note: It is recommended not to pick drive A or B from the new drive letters. This is because these drives contain floppy versions from previous software, and assigning them to the current drives can disrupt older programs.

2. Remap the Network Drive

The Windows system assigns specific letters to your computer drives. But during network mapping, the drive letters may become mixed up, or lack assigned drive letters for mapping. In such instances, you need to remap the network drive to fix the issue. Here's how you can do it.

Step 1: Type cmd on the Windows search bar and select the Run command option on the left-hand side.

Step 2: On the right-hand side, click Run as administrator.

Cmd command

Step 3: Copy and paste this command and press Enter.

net use Z /delete

Remember to replace 'Z' with the partition you want to delete.

Command prompt delete user

Step 4: After deleting the device name, modify it by running this command.

net use Z: \\server\share /user:username password

Remember to use the same drive letter 'Z' with where you want to map the drive. Also, input a relevant user and username password for the drive you want to modify.

Assign new drive and user command prompt

Step 5: Restart your device and confirm that the mapping issue has resolved.

3. Enable File and Printer Sharing

The error can also pop up if the file and printer sharing options are off. To clear the error, enable the settings through the Windows Defender Firewall. Here's how you can do it.

Step 1: Type Control Panel on Windows search bar, and press Enter.

Control panel windows 10

Step 2: Click System and Security.

Control Panel system and security

Step 3: On the Allowed apps window, locate Windows Defender Firewall and tap 'Allow an app or feature through Windows Firewall' option.

Windows Firewall Defender Windows 10

Step 4: Tap Change settings, and if administrator permissions are required, allow them.

Control panel allowed apps

Step 5: Navigate to the File and sharing option and check the boxes.

File and printer sharing windows defender

Complete the process by pressing OK and restarting your computer.

4. Change Value of Protection Mode

Modifying the value of the protection mode can also fix the issue. You can use the Registry editor to carry out this process.

Step 1: Press Windows + R keys , type regedit in the text box, and press Enter to open the Registry editor.

Run regedit

Step 2: Locate this path on the next window.

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SessionManager\

Step 3: On the right-hand pane, locate ProtectionMode and double-click on it.

Registry editor session manager

Step 4: Change the value to '1' and click OK to save.

Registry editor protection mode set value

Restart your device and confirm if the error has cleared.

5. Delete MountPoints2 Key

Deleting some registry keys could resolve the mapping issues in your system. Here's how you can erase the MountPoints2 key.

Step 1: Press the Windows + R keys to launch the run dialog box, type regedit in it, and hit Enter to open the Registry Editor.

Run regedit

Step 2: Locate this path on the next window.

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer

Step 3: Right-click MountPoints2 and select Delete. Confirm the dialog boxes that may appear and restart your system.

Delete Mount Point2 in Registry Editor

Fixing the Local Device Name

These solutions should help you fix the 'local device name is already in use' error on Windows 10. Remember that insufficient storage in the server could also result in this error. To resolve storage problems, include additional storage or free up some space on the server. Keep in mind that updating your system is also another easy way of fixing the error.


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