Are you download the Quartus Prime Software from the link below?
Could you help to provide further details on which download link that does not work?
We do not receive any response from you to the previous question/reply/answer that I have provided. Please post a response in the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you with your follow-up questions.
Please share any error message and details regarding the download issue so that we could ask the IT to investigate on it. Else, it will be difficult for them to pinpoint the root cause. Thanks.