when i try to logon my apple id on appstore on mac it says:"Your device or computer could not be verified. Contact support for assistance." but it dosenot say anything on my iPad?
Sorry for the double post. The first one didn't post everything I wrote, so I posted it again. Then I found you can edit your post but you can't delete it. You can see the rather long solution description I posted on page 7 of this and it has worked for most people, but today I have to update it because I had updated to High Sierra from Sierra and my computer kept locking up with a black screen and I had to keep turning it off and restarting it (but that's another story), so I did a time machine restore to Sierra 10.12.6 and then I could log into my iCloud and iTunes but not into the App Store. After following my instructions here several times it still didn't work. I also deleted ALL files from Macintosh HD/Library/Preferences/SystemConfiguration (except com.apple.Boot.plist), emptied the trash and then, before restarting, follow charmole advice and go into iTunes and first de-authorize your computer, then restart. After you restart, the first thing... the very first thing you do (close any and all windows with error messages or anything that wants you to log in) and FIRST go to iTunes and authorize your computer. Then my App Store worked fine and so far, apparently, so does everything else.
Great brianfromboro. Your post works for me.
Thanks. The first solution worked for me. YAY.
Thanks. Your solution worked.
This worked for me! Thankyou. I tried to open an app from the store and it refused to open and the app store refused password... On El Capitano on an old iMac. Annoying. So thanks to those who do the support community thing!
How do we restart OS X ?
I have a MacBook Pro OS X El Capitan and since yesterday I can't download any apps from the App Store because of the verification problem... I have deleted the file NetworkInterfaces.plist as asked but I don't know how to restart my computer. And what does this action consist of ? (Does it delete everything on my Mac, so I have to save everything before ?)
Thanks.
Follow the instructions given here in response to spydie2then go to the apple symbol top left and select Restart😉
This has worked for me
It worked thanks 🙂
You Rock! Thank You So Much!!! (El Capitan 10.11.3 MacBook Pro 15 - Late 2011) Saved me so much time and frustration!
My iMac (21.5-inch, Late 2012) use LAN to connect to Time Capsule in the past three years. Today, The LAN port is dead. Even I plug the internet connection directly into iMac, there is no network. So i change to use WiFi, now i can connect to internet. But Mac App Store have problem. This solution is really help me.
I also had this problem today! Thank you so much!
NetworkInterfaces.plist
Carolyn I followed your instructions and the above is not there and I am still getting the error any suggestions?
I am running OSX El Capitan 10.11.3
Hello Carolyn disregard my post. I must not have restarted my computer. It worked success. Thanks Bob
This worked perfectly for me. Thanks!
Your device or computer could not be verified. Contact support for assistance.
