9 Replies Latest reply: Sep 27, 2011 8:27 AM by dancomor
Poikkeus Level 4 (2,785 points)

Using my MBP, I can connect to the App Store with no problem. However, when I try opening the App Store with my iMac, I get an error: "Cannot connect to the App Store."


Moreover, I've just noticed that when I try to use Software Update, an error says that "Software Update can't check for updates because of a network problem." Curious error, since my connection is working fine - except for not being able to contact to the App Store and Software Update.


This is strange. Any suggestions?

  • iTomi65 Level 1 (25 points)

    Same issue here as of today (Sept. 2-11). Tried: Different internet providers, Disk Permission, Reboot.. nada.. not connecting...

  • Poikkeus Level 4 (2,785 points)

    I just solved this problem, so at least I came up with a solution.


    1. Do you use Little Snitch? If so, then that's the problem. Update to v 2.4.2 and everything should be fine.

    2. Are you able to access iTunes and/or Software Update?

    3. When did this problem happen? Did you install any updates or applications about the time?

    4. Are you a new user of Lion?


    Post here with your results...good chance all work out fine!

  • iTomi65 Level 1 (25 points)

    Indeed it was LittleSnitch the culprit. I initially checked the status of the Mac App Store in LS and noticed that it was allowing MAS access. I deleted that rule and started the MAS to see if LS will ask me the access and saw nothing, then I added manually into LS and... voila!

    So I guess kudos for both of us


    I just noticed it today actually.

    Had Lion the moment it was released.

  • joachimvdh Level 1 (0 points)

    Indeed, by updating Little Snitch, software update and the mac app store are working now.

    iTunes worked always

    I noticed it a few days ago, that i could not connect.


    Thanks for pointing out the solution

  • James Calvert Level 1 (5 points)

    I am having the same issue; however, having deleted Little Snitch, removed the relevant plist files (App Store and Software Update) from Library/Preferences and repaired Disk Permissions, I still encounter the same problem.


    Did you solve this by simply upgrading LS or should what I have done work?


    Thanks in advance.

  • Poikkeus Level 4 (2,785 points)



    You have it exactly right. All you have to do is update LS to 2.4.2 - a free upgrade - and you'll be in business again. As you've discovered, deleting plist files will have no effect, but updating will.


    Post in this thread with your results!

  • Greg_The_Bunny Level 1 (5 points)

    Yep - that worked. Thanks.

  • James Calvert Level 1 (5 points)

    Having updated to LS 2.4.2 - Hey, presto!


    All up and running again. Thanks.

  • dancomor Level 1 (0 points)

    Blame it on LS. Thanks