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Why Can’t Setup Connect to my Mapped Drive?

Background

While attempting to the establish the licensing folder during installation, you receive a message saying that setup is unable to connect to the mapped drive.  The drive exists and you can browse to files in Windows Explorer, yet the setup program does not recognize it.

This behavior is caused by the security model introduced in Windows Vista and carried forward in Windows 7 and newer operating systems.  During normal Windows operations, you are assigned a standard user token.  When running a setup program, you are elevated to the Administrator account.  Mapped drives are assigned per user account, so the drives you see mapped under your standard token are not applicable to your elevated Administrator security token.

Steps

  1. Disconnect the previously mapped network drive from Windows Explorer.
  2. Right click on Command Prompt in the Start Menu and select Run As Administrator.
  3. Type: Net Use T: "\servernamesharename"
  4. Close the command prompt.
  5. Open Windows Explorer and navigate to Computer.
  6. Click Map network drive.
  7. Select the T: drive and type \servernamesharename into the Folder box.