There are multiple scenarios where OCTGN will be running on a network share.

  1. Your My Documents is mapped to a network drive
  2. Using Parallels on Mac.

Solution 1

To fix this issue you can download this hotfix and install it on windows . If it doesn't solve the problem and you're running Parallels you can try solution 2.

Solution 2

Also, if you are running Parallels on Mac you can choose to enabled 'Isolated Mode'.

After setting up isolation mode you will also want to flush you dns