The European Commission is set to give formal approval in the third week of December to a settlement with Microsoft to end the latest European antitrust case against the software firm.
EC antitrust authorities accused Microsoft of harming browser competition by illegally bundling Internet Explorer with its Windows operating system.
Microsoft made a breakthrough with the EC over its ability to ship Internet Explorer (IE) with Windows in September.
The EC announced in early October that it had agreed to market test Microsoft's proposals to allow PC manufacturers to install any browser on top of Windows.
But the final details of the agreement have been hammered out only in recent days before being put to commissioner, according to the Financial Times.
Under the settlement, Windows users in Europe will be presented with a "ballot screen" asking them to select a default browser from a list including IE, Google's Chrome and Apple's Safari.
Microsoft has also reportedly agreed to list browser options randomly and to remove the IE logo from the screen.
Microsoft plans to distribute the code that will display this choice screen over the internet via the Windows Update facility.