Fixing error 1327 “Invalid drive”

Installing the software is easy, but it can be frustrating when you encounter errors. For example, when trying to install Adobe, Kaspersky, or Microsoft Office, you may encounter an “Invalid Drive” error 1327. This simply means that the actual drive you’re installing the software on is not working.

In this article, we’ve focused on MS Office; however, the fix is not limited to Office. Depending on your knowledge, you should be able to apply the same approach to almost any application that returns this error.

Office installations have a tendency to force installation on specific drives that may be missing. In this case, you can use the SUBST command to redirect to the correct drive, or you can manually change the LocalCacheDrive location.


Causes of Error 1327 – Invalid Drive

Causes of Error 1327 - Invalid Drive

The “Invalid Drive” error 1327 is an installation error that occurs when the drive used to install the program is invalid. This problem occurs mostly when installing Microsoft Office, but it can also occur with many other applications.

In most cases, this error occurs because the installer is trying to complete the process on an unallocated network drive. In this case, you can quickly fix the problem by mapping an unconfigured network location.

Error 1327 “Invalid drive” occurs for several reasons.

  • Your registry credentials and network drive are no longer connected.
  • Your network drive is checked Reconnect at login, and the system folder appears on the drive.
  • Your registry key may contain incorrect values.
  • You have accidentally changed the drive letter of your DVD drive.
  • The system registry points to a temporary drive.

If you receive error 1327 – Invalid Disk, check the following ways to fix the problem.


How do I fix Windows 10 invalid disk error 1327?

How do I fix Windows 10 invalid disk error 1327?

Remove the drive letter using the command line

Use this command to connect and disconnect the drive letter from the virtual location. Disabling the letter should allow you to install the program without generating an error message. So here’s what you need to do:

  1. Go to Search, type cmd, and open a command prompt.
  2. At the command prompt, type the following line and press Enter:
  3. Substance /P (driver’s letter).
  4. Close the command line and try to install the program.
Reinstall the program

If this error occurs when trying to install a previously uninstalled program, there may be a conflict with the remnants of the old program.

You should make sure that the system is completely cleared of old or unused software. There are special tools that scan every part of the system and detect and remove leftovers.

Disconnect network drive

This solution works only if the PC has a network drive, otherwise stick to the previous solution. To fix error 1327, follow these steps to disable the network drive:

  1. Go to Search, type File Explorer, and open File Explorer.
  2. Go to that PC.
  3. Press Ctrl + F1 to open the ribbon with the tools.
  4. Under Network Disk Map, click Disconnect Network Disk.
  5. Try reinstalling your program
Reconnect the drive letter to a temporary location.

This method allows you to associate a drive letter with a virtual drive location. This way, the installer finds the appropriate temporary path and uses it to install the problem software.

Note: If the temporary path does not exist, you must create one.

  1. Run the command line as administrator
  2. Type [driver letter]: C:temp -> press Enter. Close the command line -> reinstall the program.
  3. Restart the command line and enter the command: subst /D [driver letter]: to remove the program shortcut in the temporary path -> press Enter.
Create a new user account

You can also try logging in with a different user account to see if the error continues to occur. If you don’t have a second account on your computer, you’ll need to create a new account.

Did any of these solutions work for you? Tell us more about your experience with this problem in the comments. We’d love to hear about it and perhaps suggest other solutions if the above methods don’t work for you.


Frequently Asked Questions

  1. Press Start.
  2. Type "Disk Management" and press Enter.
  3. Right-click the drive whose drive letter has been changed, and then click Edit Drive Letters and Paths.
  4. Click Edit.
  5. Replace the letter with the original.
  6. Click OK.

Sometimes the directory name error message only appears because you connected external devices to an empty USB port. You can disconnect them and plug them into a different port to see if this is the solution to the directory name being invalid.

Editing a drive letter in Windows 10 is relatively easy. Right-click the Windows 10 menu and select Disk Management to display a list of all available hard drives. Right-click on the specific drive letter you want to change and select Edit Drive Letter and Paths.

A directory name is a string of characters that a directory must name if it is to name a file. A directory is actually a file type and has a filename (called a directory filename, which is related to the directory name, but usually not identical).

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog,, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.