When you are not using Cortana it is very much possible that Cortana is running in the background on your computer. You might have noticed that Cortana is using high CPU memory on your system, which can result in slowing down the computer's performance. Your computer can also start hanging because of this issue. That is why most windows users want to disable Cortana on their computer system. Users can easily Stop Cortana from using the memory of CPU in a large amount.it uses more memory because even when you are not using Cortana, then it may be running in the background programs. Some other reasons remove Cortana are: When you are using Cortana, then your every information is shared with Microsoft company which uses this personal information to enhance the performance of Cortana. Cortana has also accessed your voice sample, which is listened by real people called development team members just to improve Cortana service. Cortana can send emails, set reminder and