FIX: Error 1327 Invalid Drive blocks program installation

By: Ivan Jenic
3 minute read
fix Error 1327 Invalid Drive windows 10

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Steps to fix Error 1327 Invalid Drive

  1. Remove drive letter with Command Prompt
  2. Disconnect network drive
  3. Reassociate the drive letter with a temporary location
  4. Create a new user account

If Error 1327 appears when you try to install a certain program or software, telling you that you have invalid Drive: P:/ (or maybe some other letter), you’ve come to the right place. In this article, you’ll find some solutions for this error, and you’ll be able to install your programs normally.
disconnect network drive wind8apps

This error code may come under different forms and it affects various programs. So, users may encounter one of the following error 1327 variations:

  • Error 1327 invalid drive H :
  • Error 1327 invalid drive U:
  • Error 1327 invalid drive E:

These tools seem to be affect by error 1327 more often than others:

  • Autocad
  • Adobe
  • Arcgis
  • Kaspersky

Why does error 1327 Invalid Drive occur in the first place?

This problem might occur if the system folder is mapped that has the Reconnect at Logon check box checked, or you accidentally changed the drive letter of some of yours CD or DVD drives. This might prevent some programs, like Adobe Photoshop or Microsoft Office from installing. So, here’s what you should do to resolve this.

How do I fix error 1327 invalid drive in Windows 10?

Solution 1: Remove drive letter with Command Prompt

The command you’ll perform will allow you to connect and disconnect drive letter to a virtual location. Disconnecting a letter should allow your program to install without generating an error message. So, here’s what you need to do:

  1. Go to Search, type cmd and open Command Prompt
  2. In the Command Prompt, type the following line and press Enter:


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    This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

    1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
    2. Click “Start Scan” to find Windows issues that could be causing PC problems.
    3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

    • subst /P (Driver Letter)
  3. Close Command Prompt and try to install your program

Solution 2: Disconnect network drive

This solution will work only if a network drive appears in This PC, otherwise stick with the previous solution. Follow these steps to disconnect the network drive in order to eliminate error 1327:

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  1. Download ReimagePlus (100% safe download and endorsed by us).
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues.

  1. Go to Search, type file explorer and open File Explorer
  2. Go to This PC
  3. Press ctrl + F1 in order to open ribbon with tools
  4. Under Map networking drive go to Disconnect network drive
  5. Try to install your program again

Solution 3: Reassociate the drive letter with a temporary location

This method allows you to link a drive letter to a virtual drive location. In this manner, the installer will locate the respective temporary path and use it to install the problematic software.

Note: If the temporary path doesn’t exist, you need to create it.

  1. Launch Command Prompt as an administrator
  2. Enter subst [Driver Letter]: C:temp > hit Enter
    Close Command Prompt > reinstall the software.
  3. Launch Command Prompt again and enter the command: subst /D [Driver Letter]: to remove the software’s association with the temporary path > hit Enter.

Solution 4: Create a new user account

You can also try to sign in to another user account and see if the error still occurs. If you don’t have a secondary user account on your machine, you need to create a new account.

Did some of these fixes work for you? Tell us more about your experience with this issue in the comments. We’d like to learn more about it and maybe provide you with some additional solutions if the above-mentioned methods weren’t enough.

RELATED GUIDES  TO CHECK OUT:

Editor’s Note: This post was originally published in June 2015 nd has been since updated for freshness, and accuracy.

For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

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