For those not actually reading the article, this goes back to the multi-billion dollar EU ruling from 2004. Microsoft appealed it for years and eventually reach

For those not actually reading the article, this goes back to the multi-billion dollar EU ruling from 2004. Microsoft appealed it for years and eventually reached a settlement in 2009, which reduced their fine to a fraction of the original ruling. However, one of the key requirements of that settlement was the browser ballot, which Microsoft has been violating (as they admitted, but stated the noncompliance was unintentional). Since Microsoft breached the terms of the settlement, they're now potentially on the hook for the original fine plus whatever else applies.