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  1. The terminal trick saved my life, I just put my password and it worked. This thing drove me crazy for YEARS, Thanks a lot!

  2. The activity monitor tricked worked! I couldn’t believe I had to go this far to get my iPhone 6, my 2014 MacBook air and my new iPhone xr all to finally cooperate with each other after all the other methods failed. Thank you thank you!

  3. I have not been able to fix this issue for months, but the terminal solution worked like a charm! It took me a second to figure out but once I did I was extremely thankful. Basically, when terminal asks you to type your password it will not show when you type, but it will say “incorrect password” if you press enter. You just have to carefully type your password even though you will see no changes on the screen as you type, and once you type your password simply press “enter” and you are finished!

    1. Thank you so much for explaining this! I was so confused when it came up with the password bit but then I couldn’t fill in my details anywhere! You’re a life saver 🙂

  4. Thank you so much, the terminal thing immediately fixed the problem, when restarting my devices didn’t

  5. THE TERMINAL COMMAND WORKED FOR ME!!! I had to put in my password first but THIS WORKED!! THANK YOU! This has been driving me nuts for years!

  6. I’m using Catalina 10.15.7 and iOS 13.5.1 on an iPhone XS. I tried everything to make the phone show up in my MacBook Pro’s Finder and finally the terminal command above did the trick! Thanks so much.

  7. This terminal command worked for me. Thanks a lot. I was thinking to go to the Apple service center. You saved a lot of bucks… Thanks man..!!

  8. Hi, I tried the terminal command but it said “command not found”, what should I do? My usb keep rejecting… Thank you

    1. Hey try again, didn’t work for me first time either but you need to pay attention to the punctuation, its like this:

      sudo killall -STOP -c usbd

  9. The terminal command worked for me too! This is great thank you for sharing!! This has been an issue on my 2014 Retina for so long. Was isolated to the left-side USB port only, but always happened regardless of the device or cable. I kept thinking it was the USB port. Also used a small brush and compressed air to give a mild cleaning and then did the steps in terminal. Actually works now!

  10. THANK YOU!!!! I wish Apple was aware of this fix. I just spent 20 minutes with them to have them say I need to bring my laptop in for repair.

  11. Both Activity monitor -> X usbd and sudo killall -STOP -c usbd worked for me. Had this problem for about a year and now problem FIXED thanks to you!!!

  12. Thanks 😊

    Activity monitor: kill usbd worked for me. 👍

    .. but in my case the problem comes back after a while and I had to kill usbd process again!

  13. It’s worked for me, but after restart the Mac, comes back again.
    Not for charge, but in TV app folder cannot appear the iPhone, or just for seconds 🙁

  14. USBD really worked! I have been searching the solutions for 1.5 years. Thank you so much! I don’t mind repeating the same action as long as my iphone can be connected to the laptop.

  15. number 6 solved it for when i need to sync my iphone with laptop. Rest of the time i charge it from the socket

  16. USBD worked for me (but after I force restart my phone, resetting location and privacy setting, and resetting PRAM on my Mac). Thanks, however, does this mean I have to force quit USBD when I’m plugging my phone again?

  17. Thank you so much!!! After months of searching your activity monitor trick worked. God bless you 😭😭😭

  18. “Removing debris” worked for me! had this problem for years! I just had to blow in my MacBook’s USB port and voila!

  19. I had this issue for over a year. Today I stumbled across a page that said to do a SMC reset and now it is all fixed!! Shutdown the Mac and connect the power cable. Hold down Shift+Control+Option+Power all at the same time for a few seconds. The light on the power adapter will blink or change colour once you remove your fingers (all at the same time). When it does this you’ll know ths SMC reset is complete. Turn your MacBook on by hitting the power button like normal. It should be fixed now 🙂

  20. I finally found a solution to this! I tried the above but usbd kept being an issue. Solution: connect through an old USB 2.0 Hub. “usbd” apparently is responsible for negotiating the higher charging rate for iPhones, but gets glitchy (with cables that work, but not considered reliable enough for fast charge…?) The hub can’t request higher charging power. iPhone connection is 100% solid going through the USB 2.0 hub that CAN’T request higher power!

  21. The force quit in activity monitor didn’t work, but the terminal command worked:
    sudo killall -STOP -c usbd


  22. Hi,

    I thought it might be dust in the charging port on the iPhone but the kill process in the activity monitor worked for me – i searched USB and killed anything to do with it, Reconnected my phone and straight away it popped up with ‘Do you trust this device?’. I had also reset locations and privacy settings on the phone too, which may have helped.


    1. It also work for me when I have used the terminal; I couldnt find usbd in activity monitor.

    1. it didn’t for me until I clicked on network and it showed it. it fixed my issue right away after that

  23. I have been experiencing this forever and gave up trying to use my laptop to charge my iPhone. This fix worked first time! Thank you!

  24. O. M. G. !
    The “sudo killall -STOP -c usbd” commend works (solution #6). I am so thankful for finding a solution here! It’s been bothering me for years (since I had my MacBook), I thought it’s some sort of defect of my MacBook! THANK YOU SO MUCH for the solutions!

  25. Trying step 6 now, but nothing shows up when I search for usbd in Activity Monitor. Is the word universal? My Macbook is in norwegian.

  26. I had the usb issues for YEARS! Thank you! The ‘usbd’ stopper worked! Can’t thank you enough!

  27. The #6 fix “worked” but now my iPhone is not seen by iTunes. Basically the MAC is only charging my phone but I cannot sync it via iTunes. Not much good but it did stop the connecting/disconnecting issue. Once I restarted the MAC, the problem came back. IS there a permanent fix where as I can also sync up to iTunes?? Thanks

    1. Same for me Glen. I can get my phone to charge now, but I can’t sync iTunes or photos, etc.
      Any additional suggestions would be appreciated!

  28. Point # 6 with Terminal App worked and released the headache. Had contacted the Apple Support beforehand but they couldn’t help it out.

  29. THANK YOU SOOOOOO MUCH!!!!!!!!!! first before i did the number 6 trick itunes said to factory reset my phone. thank you thank you thank you

  30. I was struggling with this since 4 months. I was assuming there was some thing wrong with my iPad. but fortunately i got this sudo killall -STOP -c usbd . it worked like a charm for me

  31. 6-Connect your iPhone or iPad to your Mac. And then open the Activity Monitor app (Applications > Utilities), or you can use Spotlight.

    When you open the App, enter usbd in the search field. And the force quit the process by clicking the X sign.

    this is solved my problem

      1. This is insane. I thought the problem lies in my cables. I thought of buying the new one. But this totally SOLVED this problem. You are great.

    1. YES, this is exactly what I came here for. No bloat , no spam. ANSWERS! Thankyou to their website, the article authors and this comment section. 10/10 very satisfied.

    2. Broooooooo! Been trying to fix this issue since last year… all my codes, couldn’t even test apps on my iPhone because it just won’t even have a stable connection for me to launch apps from my Xcode 🤦🏽‍♂️ God bless you 👌🏽

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