Hello Anne Claire BEIGE ,

I am assuming you are referring to the Serach and Replace function in Trados Studio?

Could you please explain what you mean by you no longer have access? Is it simply a case of that you no longer can see the pop up window?

If so, please disconnect secondary screens from your desktop/laptop (and ensure in Windows settings that Windows only sees/finds the main screen.

Reboot your machine and restart Studio.

Now check the Search and Replace function.

Once you can see this again, add the secondary screens.

It turned out that it wasn't necessary to diconect secondary screen as I found the Search window when it was on the different screen from the main window. 

I was all the way to the right on my wider screen so I guess I could not see it on the smaller one when I was using single screes setup. This is only my guess, correct me if I'm wrong. 

Hope this helps someone

It turned out that it wasn't necessary to diconect secondary screen as I found the Search window when it was on the different screen from the main window. 

I was all the way to the right on my wider screen so I guess I could not see it on the smaller one when I was using single screes setup. This is only my guess, correct me if I'm wrong. 

Hope this helps someone