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High Band With "idleassetsd" & "nsurlsessiond" back ground process

It has been noticed that all of my data packages "idleassetsd" consumed in one day 60GB first date, 2nd 30 and now running with 14GB, apart from this "nsurlsessiond" also consumes lot of data,

Is there any solution for this? this is very annoying after Sonoma update. altogether 193GB of consumed

iMac 21.5″, macOS 14.1

Posted on Dec 7, 2023 2:06 AM

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Question marked as Top-ranking reply

Posted on Jun 27, 2024 11:49 AM

I ran into this issue as well as idleassetsd in my activity monitor was using 50GB/hr that led to over 700GB usage per day.


I contacted Apple Support and they recommended setting Wallpapers and Screensavers to a static image.

After restarting Activity Monitor idleassetsd stopped downloading as it is now at 0 bytes sent and recieved.

48 replies

Oct 25, 2024 11:56 AM in response to rj_oregon

From the first instance I used to block this "idleassetsd" & "nsurlsessiond" service and finally it stopped downloading the movie files and sofar away it didnt gave me any problem even I update to Sequoia and I think this is the best solution for it.


my advice is if you need to go ahead with live wall papers use 3rd party wallperper service like "my Wallpaper" and end this berden for all.


Nov 3, 2024 10:32 AM in response to akhma60

Just curious what does 127.0.0.1 signify, does it result in a noop?

When I deny access using the LS firewall, idleassetsd does something else later on, when it wakes up: On my mac mini it generates 1000 network access requests per second, and never stops. Idleassetsd seems to require completion as measured by download of specific files. Seems if network connection blocked by LS the daemon code just spins on “try again,” which is a bug (no delay before retry). The process becomes the top-consumer cpu thread, the computer gets quite hot all the time. Apple’s killing my mac mini by baking it.

I’ve got to where I won’t leave this machine powered up 24/7 in the living room. Shut off when not in use. Annoying as it’s my music server too.

Nov 10, 2024 5:02 PM in response to Roos_CR

I have this issue too. It’s downloading more than 100GB and won’t stop. I selected a static wallpaper and screensaver, but it continues downloading. I blocked internet access for idleassetsd using the LuLu app. After that, idleassetsd seems to hang, using 60% of my M1 CPU and filling up all my RAM. Right now, I’ve written a shell script to repeatedly kill the process so I can use my device. This is a bad situation and needs to be fixed.

High Band With "idleassetsd" & "nsurlsessiond" back ground process

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