8 Replies Latest reply: Aug 21, 2013 3:08 PM by nikhilfromtx
Cory James22 Level 1 Level 1 (30 points)

We have a WPA Personal wi-fi network in our house. All other computers (including those on Lion) can connect fine.

 

However, after updating to Lion, this iMac (mid-2010) will see the network, but when selected it does not even give an option to enter a passcode, and makes no attempt to connect. I tried deleted the network from the remembered networks and from the keychain. I can connect using "Join Other Network" and manually entering the SSID, password, etc.

 

Tried using anothe account, tried restarting the computer, tried deleting preference files from MacHD-> Library ->System Configuration. Don't understand what to do.


iMac, Mac OS X (10.7), 21" Mid-2010, Core i3, 4GB RAM
  • 1. Re: iMac updated to Lion won't connect to wireless network
    Cory James22 Level 1 Level 1 (30 points)

    AVAST seems to be the culprit for many, but no anti-virus is installed on this computer.

  • 2. Re: iMac updated to Lion won't connect to wireless network
    JAH2488 Level 1 Level 1 (0 points)

    I am having a similar issue. My iMac (late 2009) 27" does not want to auto connect to my home WPA network now that it is on lion. It just sits there with no internet everytime the computer goes to sleep and needs to be manually told to connect after.

  • 3. Re: iMac updated to Lion won't connect to wireless network
    Cory James22 Level 1 Level 1 (30 points)

    Ok I got mine working. Try this: first, go to syste

    Preferences -> network -> wifi -> advanced settings and delete any remembered networks. Then open the program named keychain, and delete any saved networks. The go to MacHD-> Library ->System Configuration and delete any preference files (com.xxxx....) related to the network including the file with nat in it. Empty the trash and restart the computer. Connect to the network and tell it to remember the network. Hopefully that will work

  • 4. Re: iMac updated to Lion won't connect to wireless network
    mr_timp Level 1 Level 1 (0 points)

    Hi Cory,

     

    Did your suggested method work for you or is it just a suggestion?  I'm holding off upgrading any further SL machines to Lion until I can figure this (and a few other issues out).

  • 5. Re: iMac updated to Lion won't connect to wireless network
    morganfromashburn Level 1 Level 1 (0 points)

    I tried the suggestion of deleting all old networks in the keychain, etc. and my connection was fixed for about 36 hours.  It went down again the other morning and I had to reset my router once more. 

     

    The interesting thing is that my husband's PC won't connect to the internet either unless my iMac can connect. Another interesting point is that my sister's Macbook Pro won't connect at all and she's running 10.6.8.

     

    This is such a frustrating problem and I'm very annoyed that there hasn't been an update to resolved the issue yet.

  • 6. Re: iMac updated to Lion won't connect to wireless network
    rcordo Level 1 Level 1 (0 points)

    Same problem after lion installed on my Macbook Pro but no issues with my IMac running SL, Cory James 22 has the solution, except that I didn't have to do the keychain part of it. Just go to Network preferences>Advance>WI-FI tab>Preferred Networks and delete all of them, make sure that the remember networks box is checked, reboot and connect to your Network it will ask for your password and will save to keychain. You should be good after that. If that doesn't do it follow all the same steps  but first, renew the DHCP lease on the TCP/IP tab. That did it for me and no problems so far. Good luck.

     

    Message was edited by: rcordo

  • 7. Re: iMac updated to Lion won't connect to wireless network
    Cory James22 Level 1 Level 1 (30 points)

    Yes, it seems to be a temporary solution to something that needs to be addressed in a future update.

  • 8. Re: iMac updated to Lion won't connect to wireless network
    nikhilfromtx Level 1 Level 1 (0 points)

    My problem was fixed with your suggestion. I think it was because I had connected to a network previously with the same SSID, but the router has a different address. So that address was perhaps saved in one of my network preference com.* files, causing my Mac to trying finding it, timeout and then find the new networks. Anyway, it works as of now. Thanks much, Cory James22!