59 thoughts on “How to Fix ‘Cannot Connect to App Store’ Error When Accessing Mac App Store Updates, OS X Lion 10.7.4

  1. Hi,

    I had the same problem and your tutorial worked wonders on and otherwise unsolvable problem. Thanks a lot!

    How did you think about this particular approach?

    1. Marcos – glad it worked for you. I found bits of the solution on other forums and brought it together here in the hope it would help others. Seems to be working for most people!

  2. i found this page while looking for a solution to “cannot connect to App Store” solutions.
    i tried opening Keychain and looking for “blue crosses” which i didn’t find.
    Oddly, when i closed Keychain and tried opening the App store again: it worked fine.
    So, perhaps, just try opening and closing Keychain first before going through the rest of the steps. just saying

    1. Vicki, thanks for the feedback. The ‘blue crosses’ indicate certificates with custom trust settings. If you couldn’t see any listed on your system, then all should have been working fine, as you discovered when you tried a second time. Running Keychain on its own without applying any changes would not have made any modifications to your system. Glad its working for you though!

    2. Hey, incidentally, no blue crosses for me either. I think the opening and closing of the key chain access certificates might have automatically refreshed a couple of values, or at least that is the only logical answer that came to me. Anyway, opening and closing worked and now it seems to be running, thanks though.

      I will now go and work on my windows system 😀

  3. Worked for me too. For me, the cert in question just had a lighter highlight, no cross. It’s unbelievable that something so stupid broke the app store. Breaking it and returning it to normal fixed it. Gotta like that kind of Apple logic. 🙂

  4. Frustrated with this issue until I read your post. Now I have been able to do all updaters I have missed for the last two months. Thanks…

  5. THANK YOU SO MUCH. I don’t understand why it all got messed up in the first place but I’m so so happy this fixed it. ❤❤❤❤❤❤❤❤❤❤❤❤❤❤

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