Satellites would likely begin colliding with each other or space junk in less than three days if they were to lose the ability to maneuver, for example due to an intense solar storm.

'Crash Clock' reveals how soon satellite collisions would occur after a severe solar storm — and it's pretty scary

Source: space
Source Link: https://www.space.com/space-exploration/satellites/crash-clock-reveals-how-soon-satellite-collisions-would-occur-after-a-severe-solar-storm-and-its-pretty-scary