An unknown error has occurred app store

I’ve had this problem since 10.8.1 and unfortunately it’s survived into 10.8.2 which was released today.

I’ve tried all the tips suggested in this forum, all to no avail.

same here. no luck with 10.8.2. very dissapointing...

if anyone has experienced this problem and was able to solve it: please post the solution!

many people will be very grateful

Same here. 10.8.2 solved only the problem with Parental Control, there are obviously another reasons for this issue. Workaround is to create another account dedicated for AppStore access. I hope Apple will address this issue as soon as possible.

to resolved the issue

navigate to Library/Preferences/SystemConfiguration and then delete NetworkInterfaces.plist

then restart ur mac, setting ur network and sign in app store. 🙂

This solution is based on the idea, that for AppStore login the main network adapter name must be "en0". And really some people reported succes after rebuilding the interface list.

For me this did not work. Like other solutions circulating in the internet. As system programmer I do not believe that AppStore application has data link layer dependecies, but its worth a try.

thanks for the suggestion mohd hatta.

i tried this, unfortunately it didn't work for me...

As I just posted elsewhere, I discovered what was preventing me from doing updates/installs from the App Store was a permission problem that occured when I did a SetupAssistant transfer to my brand-new MBP. This permission issue did not get fixed by Disk Utility's "repair permissions."

Opening up the terminal, and doing the following worked for me:

cd ~

chmod 755 Library/Cookies

It may be desirable to change the permissions on all of the Cookie files, if the permissions on the individual files got messed up somehow. In that case, you would type:

cd ~

chmod -R 755 Library/Cookies

I don't know if this is the cause of other people's issue, but it solved mine. Good luck!

No luck for me. I know there must be some sort of permissions issue in my Library folder but I have no idea what it could possibly be.

Confirming that mohd hatta's solution has solved the Mac App Store login issue on my wife's MacBook Air. For reference, the solution was to delete the "NetworkInterfaces.plist" file in the "/Library/Preferences/SystemConfiguration" folder. Then restart your Mac so the system can re-create that file for you.

Thanks mohd hatta!

Not work for me .... ,

The network interface problem is known older problem. This is something new and the problem is on Apple's end. IOW it's something they changed which caused this. So far, none of the solutions posted has worked for me.

I was not able to remove that file, despite the fact I was logged in as an administrator. I received a "permission denied" message. ???

jconstantine, if you're in Terminal, you'll need to `cd` into the directory, then run `sudo rm -f NetworkInterfaces.plist`. The `sudo` bit runs the command after it with heightened security privileges (that of an admin). If you're trying to delete the file via Finder, then I'd expect the password prompt to show up.

Thank you. I had just figured that out myself. And deleting the NetworkInterfaces.plist file worked for me as well! Thank you mohd hatta!

Thanks, This just worked for me!! 🙂