You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Broostar Author

Level 1

0 points

Problems logging in.....

Ok so finally got round to downloading the OS update. Went into the App Store tried logging in with my details, which work fine with Itunes and it comes up with this error msg:

No GUID is available. Contact Support for assistance.

Any idea where im going wrong?

Thanks in advance

Posted on Jan 23, 2011 2:16 PM

130 replies

Feb 25, 2011 2:32 PM in response to Annorax64

I have the same problem. Ist generation MacBook Air. HD was replaced a few months back because first one crashed. However, I do not have the

/Library/Preferences/SystemConfiguration/NetworkInterfaces.plist file anywhere on my computer.

In fact, I don't even have the SystemConfiguration folder. Anything else I can try?

Feb 25, 2011 3:00 PM in response to wdavis1798

Never mind. I dug a little deeper and resolved the problem with the solution offered above. Many thanks.

Feb 25, 2011 3:52 PM in response to wdavis1798

What did you do? I can't find the file either...

Mar 13, 2011 3:22 PM in response to wdavis1798

Where did you find this file? I can't find it and don't have a system configuration folder

Message was edited by: mjaindl

Mar 13, 2011 4:49 PM in response to Community User

If you're like me you have many "Library" directories on your mac

To fix this issue you need to choose the one under Macintosh HD - > Library -> Preferences -> SystemConfiguration -> NetworkInterfaces.plist

Deleting the NetworkInterfaces.plist file and rebooting worked for me

s0198hb

Level 1

0 points

Mar 22, 2011 1:05 PM in response to Annorax64

i have tried that and i still cant get it to work any ideas

May 2, 2011 9:07 AM in response to s0198hb

Same problem. MacBook Air, HD crash, reinstalled OS at Apple, and then "no GUID is available..."

I tried to delete the NetworkInterfaces.plist, but after that it didn't recognize my airport! So, I copied the NetworkInterfaces.plist back, and now my airport works, but App Store does not. Any ideas?

I checked what is inside file (using prefsetter), and there is an entry for ethernet, airport, and firewire. Of course, the MacBook Air does not have firewire, so perhaps that's the problem?

May 6, 2011 12:13 PM in response to ahostmadsen

I am having the same issue and when I deleted the preference file, my airport card would not respond. I did remove the firewire preference, with no success. Just wondering if anyone else has any ideas?

May 9, 2011 10:54 PM in response to nkatariya

It worked, after all! I went to the Genius bar, and had them try out what was in this thread (they hadn't seen the problem before). The only reason I didn't do it myself was that I was worried about the missing airport after deleting the file. But that's not a problem. Just delete all network interfaces in the network preferences, and then manually add an airport.

srizvi1

Level 1

23 points

Jun 11, 2011 8:34 AM in response to ahostmadsen

I'm dealing with this "No GUID is available. Contact Support for assistance" error while trying to download an app from the app store. I went into System Preferences -> Network, deleted everything, hit apply, then put just airport back in there and hit apply. I started up the App Store again but am still getting the error again when I try to download an app

Jun 11, 2011 10:51 PM in response to srizvi1

You have to delete the file "Macintosh HD - > Library -> Preferences -> SystemConfiguration -> NetworkInterfaces.plist" then restart the computer. After that you can manually delete/add network interfaces.

Jun 23, 2011 6:20 PM in response to ahostmadsen

Ittttttt's baaaaaaccckk!

I had this problem when I upgraded to 10.6.6, the first version of OS X with the new App Store. Followed these instructions (or some like it somewhere else) and all was well until today.

Upgraded from 10.6.7 to 10.6.8 this evening, getting the error again, attempted this fix but to no avail.

The one thing I noticed is that, after deleting the networkinterfaces.plist and rebooting, when I re-add my network adapter back in, it automatically remembers my preferred wi-fi network and password. For some reason, I'm thinking it did not remember those things when I had to perform this fix the first time many months ago.

Jun 24, 2011 1:49 AM in response to Broostar

By removing the file "NetworkInterfaces.plist", is there anything special that I ought to be extra aware of?

What is "NetworkInterfaces.plist" basic purpose?

The only problem is with AppStore in my case.

Thanks in advance

breads

Level 1

5 points

Jun 24, 2011 7:00 AM in response to Dah•veed

I am having the same issue after the update yesterday.

Model Name: MacBook Pro

Model Identifier: MacBookPro4,1

Processor Name: Intel Core 2 Duo

Processor Speed: 2.5 GHz

Number Of Processors: 1

Total Number Of Cores: 2

L2 Cache: 6 MB

Memory: 4 GB

System Version: Mac OS X 10.6.8 (10K540)

Kernel Version: Darwin 10.8.0

Boot Volume: MAC OS

Boot Mode: Normal

breads

Level 1

5 points

Jun 24, 2011 7:37 AM in response to breads

Maybe I should make myself clear. I had not had any issues with the Mac Apps Store until after the OS update yesterday. I now get the dreaded "No GUID is available. Contact Support for assistance."

Problems logging in.....