Microsoft has stated that they have fixed a major bug in Windows Vista Service Pack 1. The Vista SP1 bug caused computers to go into a never-ending reboot cycle.

The fix applies to Microsoft’s Servicing Stack Update for Vista SP1. Users need to install the update before downloading SP1. “This fixes an issue that a small number of customers experienced when we first issued the SSU in February,” said a Microsoft spokesman.

An update for the SSU will stop this annoying little behavior from happening for Vista customers, to allow them to proceed with the Vista SP1 installation via Windows Update. Vista users who opt for the standalone download of Vista SP1 will avoid the whole SSU prerequisite check entirely.