nsurlsessiond - taking up all bandwidth

Question

I am tired to find solution about nsurlsessiond. It's used my 2GB Data daily. I am also tried bellow link. Because of that i am not able to complete my company work. Please any one help. I am also try to find answer in bellow link, but non of these working in my case.

1. https://forums.macrumors.com/threads/nsurlsessiond-heavy-network-usage.2027130/
2. https://forums.macrumors.com/threads/nsurlsessiond-process-going-crazy-on-catalina.2228994/
3. https://forums.macrumors.com/threads/nsurlsessiond-downloading-data.1785204/
4. https://discussions.apple.com/thread/6605949

I am getting this while on click nsurlsessiond.

Answer 1

I fix it by disabling Software Updates.

Go to System Preferences -> Software Update

Click on Advanced... and uncheck "Check for Updates"

Edit

I had this issue again recently but only when i opened the iOS simulator. I don't know what's the problem but the simulator will use internet for about 500MB and back to normal. Either you can wait until simulator stops downloading or just block the url using firewall as @Lutze explained

Answer 2

The main problem is that any application can delegate transfers to the NSURLSession Daemon. As a workaround you could use an application firewall like Little snitch to detect and block the specific domain where the traffic comes from.

In my case it was "osxapps.itunes.apple.com" that took a lot of bandwidth.

Screenshot of little snitch with the blocked domain