With one year to go until Microsoft ends support for its ten-year-old operating system Windows 7, as many as 43% of enterprises are still running the outdated platform.

Kollective’s research found that nearly a fifth (17%) of IT departments don’t know when the end of support deadline is, while 6% are aware of the end of support but are yet to start planning for their migration away from Windows 7.

Those that remain on Windows 7 past January 14, 2020 will either have to pay Microsoft significant sums for extended support or will leave their systems open to cyberattack. In the case of those largest enterprises, with 10,000 or more terminals, the fee to Microsoft could be in excess of $1.4m a year.