Javascript Disable already started error message in JavaScript

Question

I use JavaScript to launch into an external browser window using window.open(). The first time I start from my application, the window opens perfectly in Internet Explorer 11, however, when I close the window and try to open it immediately, I get the following error:

If I wait ~ 10 seconds and try again after closing the window, an error does not appear.

Does anyone here see this error earlier and know what might cause it? Is there a possible solution? I tried to disable the popup blocker, but to no avail.