'Error 1327: Invalid Drive: [drive letter]' when installing
Description

When you install your Sage software, the following message may appear:

'Error 1327. Invalid Drive: [drive letter]'

This occurs if your computer has a missing drive. To resolve this you may need to create a temporary drive so the installation can complete successfully.

Cause
Resolution

Check you're logged on as an Adminstrator

When installing, if you aren't logged in as an administrator, the error may refer to a different drive letter. You should restart the computer, log in as an administrator and try installing again. If the problem persists, follow the steps below.


Check if the drive letter exists

  1. Press and hold down the Windows key and press E.
  2. Check if the drive letter in the error message exists.
  3. If the drive letter already exists, DO NOT attempt to create a temporary drive.

    You should instead check the Windows user and update the system registry.
  4. If the drive letter is letter doesn't exist, you must create a temporary drive.

Check the Windows user

To confirm this issue isn't caused by the Windows logon, create a new Windows user and try installing again. If the error still appears, you must create a temporary drive for the missing drive letter to be able to install Sage software.


Create a temporary drive

You can create the missing drive by allocating the missing drive letter to a USB flash drive:

  1. Insert the USB removable storage device.
  2. Press and hold down the Windows key and press E.
  3. Check the drive letter allocated to the USB removable storage device.

    The next available drive letter is automatically allocated to the USB removable storage device.

  4. If the missing drive is allocated, proceed to step 11.

    If any other drive letter is allocated proceed to the following step.

  5. Press and hold the Windows key and press R.
  6. In the Open box, type diskmgmt.msc then click OK.
  7. Right-click the USB removable storage device and click Change Drive Letter and Paths.
  8. Click Change and select the Assign the following drive letter option.



  9. From the drop-down list, select the missing drive from the error message. E.g. C.

    If the message refers to a different drive letter, choose the relevant letter from the drop-down list.

  10. Click OK and Yes to confirm.
  11. You can now install the Sage software.

    NOTE: Do not install the software to the new drive you've created.

Once the installation has been successful, the USB flash drive can be removed as normal.


Update system registry

If you're unsure how to complete any of these steps, you must speak to your IT support.

  1. Back up your Registry.
  2. Click Start then click Run.
  3. Type Regedit then click OK.
  4. Browse to the following folder:

    HKEY_CURRENT_USER\Software\Microsoft\Windows| CurrentVersion\ Explorer\User Shell

  5. In the right panel, search for entries that list the incorrect drive.
  6. Modify the incorrect drive to point to C:\.
Steps to duplicate
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