Open tab in existing IE instance

Question

$ie = New-Object -com internetexplorer.application

Everytime i open a new website with this object(ie every time when script runs) it is opened in

Answer 1

First you have to attach to the already running Internet Explorer instance:

$ie = (New-Object -ComObject "Shell.Application").Windows() |
      Where-Object { $_.Name -eq "Windows Internet Explorer" }

Then you Navigate to the new URL. Where that URL is opened is controlled via the Flags parameter:

$ie.Navigate("http://www.google.com/", 2048)

Edit: In case 2 or more IE instances are running (additional tabs count as additional instances as well) the enumeration will return an array, so you have to select a particular instance from the array:

$ie[0].Navigate("http://www.google.com/", 2048)