Chrome Extensions - Preventing the new add-on installed tab

[CHiLL]

We've been having issues with Google Chrome's built in PDF Viewer and have disabled it in favour of Adobe Reader. At the moment, any PDF a user selects in Chrome is downloaded and can be opened from their downloads folder. I've force installed the Adobe Reader Chrome extension via GPO, so that they can view the PDF in the browser.

 

This works, however we have an issue with the installation of the extension. The issue manifests itself on 'new' logins, whether it's a machine the user has not used before, or a machine that has had the profiles deleted using DelProf.

 

When a user logs in for what is effectively the first time and launches Chrome, a new tab is opened entitled 'Adobe Acrobat extension for Chrome' with a description of what the extension can do. This is all well and good, but it appears every single time the user logs on to a machine.

 

I've tried installing the extension both as a User Configuration item and also as a Computer Configuration item. Both have the same problem.

 

For the moment, I have removed the extension and the user will have to open the PDF from their downloads.

 

Is there any way I can prevent that tab from opening? Impero doesn't have the ability to close a tab, only the whole browser, so we can't use that.