Software Update: Could not be Verified

I have a MacBook Pro running Mac OS X 10.7.3 Lion. Since I have gotten it, I've used Software Update without experiencing any problems - untill now. Now, whenever I try to download/install updates, I get an error message saying "The update could not be verified. It may have been corrupted or tampered with during downloading. The update will be downloaded and checked again the next time that Software Update runs." What is going on, and how can I fix this?

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of this exercise is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login. Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. The instructions provided by Apple are as follows:
Be sure your Mac is shut down.
Press the power button.
Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone.
Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem(s)?
After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

Similar Messages

  • Software Update - could not be verified and expanded

    I tried to do a search on this, but didnt initially find anything.
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    I tried to chown the permissions on that directory, no difference. I then did:
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    rm -r tmp
    mkdir tmp
    cd /
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    ...and now the error message for software update has become: blah blah blah, Make sure you have permission to write to /tmp/com.apple.SoftwareUpdate, then try again.
    Can anyone help? This computer has been sitting dormant for a couple of months and I wasnt the main user before so I can only assume this has been going on for a while and is not a new issue. Thanks!!!
    Message was edited by: Arbitrage1

    Arbitrage:
    I wasnt the main user before
    Do you have an admin account on the computer?
    Instead of Software Update, I suggest that you download and install 10.3.9 Combo Update. Remember to Repair Disk Permissions before and after installation.
    Happy Holidays.
    cornelius

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    I was in your same situation with 14 downloads and 14 attempts. 
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    How can I solve this? Every time I have the option to update an application I receive the same notification: "The update could not be verified. It may have been corrupted during downloading. The update will be downloaded and checked again the next time that Software Update runs"

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    . I have tried numerous lookups, asked questions at various Apple forums.
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    Question typed in subject space.  Sorry!

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