Error 1327 – Invalid Drive


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The following error message displays:

“Error 1327. Invalid drive :\”

…where is a drive letter, or potentially a drive letter, on the system or network.


This results for two reasons, the first being when a user attempts to install to a drive letter that has not been mapped to a drive. This also occurs when users are logged into the server and do not have sufficient permissions.


In the case of a non-mapped drive, create a mapping to the drive, then attempt to run the installer again.

Regarding user permissions, if it is a domain account, create a local user with the same user name and password (shadow the domain user as a local user). If the user is a local user there is no need to shadow the account. Add this user to the local Administrators group. Give the user the following local security policies:

  • Act as part of the operating system
  • Log on as a service
  • Log on locally
Re-attempt the installation and it should now complete without issue.