Unity Hub 2.4.2 Not Installing SDK/NDK

When attempting to install the Android SDK and NDK Tools through Unity Hub 2.4.2, after I accept the License Agreement, it seems at first as if the download starts (the progress bar appears). However, after about 3 minutes, the progress bar disappears, and the modules aren’t installed. Why is this happening?

same thing happening to me. seems to be due to weak or slow internet connection. because i never had this problem until internet got throttled.