Trying to upgrade itunes on windows computer error comes up invalid signature and will not install, trying to upgrade itunes on windows computer error comes up invalid signature and will not install

invalid signature error when trying to install itunes 12.01? 

Praise God - I found the solution after hours of work: (1) Uninstall all Apple programs (itunes, Quicktime, Bonjour, .....); (2) Go to "Common Files" and delete all Apple files - this might be difficult for some are locked from you - you may have to change the "Owner" of the file in order to delete it - if that doesn't work "Rename the Apple Follder to something like Apple Old - that's like deleting it.  Then download 10.5 from Apple and away you go - yippee.

Similar Messages

  • I clicked "yes" to upgrade iTunes and now it doesn't work. I get an error message stating my computer is missing MSVCR80 and then a message stating Error 7 (Windows Error 126). I've tried reloading iTunes twice. What can I do?

    I clicked "yes" to upgrade iTunes and now it doesn't work. I get an error message stating my computer is missing MSVCR80 and then a message stating Error 7 (Windows Error 126). I've tried reloading iTunes twice. What can I do?

    Go to Control Panel > Add or Remove Programs (Win XP) or Programs and Features (later)
    Remove all of these items in the following order:
    iTunes
    Apple Software Update
    Apple Mobile Device Support (if this won't uninstall move on to the next item)
    Bonjour
    Apple Application Support
    Reboot, download iTunes, then reinstall, either using an account with administrative rights, or right-clicking the downloaded installer and selecting Run as Administrator.
    The uninstall and reinstall process will preserve your iTunes library and settings, but ideally you would back up the library and your other important personal documents and data on a regular basis. See this user tip for a suggested technique.
    Please note:
    Some users may need to follow all the steps in whichever of the following support documents applies to their system. These include some additional manual file and folder deletions not mentioned above.
    HT1925: Removing and Reinstalling iTunes for Windows XP
    HT1923: Removing and reinstalling iTunes for Windows Vista, Windows 7, or Windows 8
    tt2

  • Why do I get this after I tried to upgrade iTunes on my computer? error 7 (Windows error 127)

    Why do I get an error when I try to upgrade iTunes ERROR 7 (Windows error 127)

    See Troubleshooting issues with iTunes for Windows updates.
    Use the steps in the second box to repair your iTunes installation. Your library should be unaffected by these steps but there is backup advice elsewhere in the user tip.
    tt2

  • I can not open iTunes. It started when an upgrade appeared. Now I get this message when I try to open itunes. can not find MSVCR80.dll     Then I get ERROR 7 (windows error 126)   I tried reinstalling iTunes but that did not help. Please Help Me!

    I can not open itunes on my computer. It started when an upgrade appeared. Now I get a message that states This application has failed to start because MSVCR80.dll was not found. Re-installing the application may fix this problem. I tried to reinsall the application but it did not help. I also get a message iTunes was not installed correctly. Please reinstall iTunes   Error 7 (Windows error 126)   Please Help me!

    Click here and follow the instructions. You may need to completely remove and reinstall iTunes and all related components, or run the process multiple times; this won't normally affect its library, but that should be backed up anyway.
    (99623)

  • I tried to upgrade itunes and i get windows error 7

    i tried to upgrade itunes and i get windows error 7 - it says "The procedure entry point AVCFPlayerEnableHardwareAcceleratedVideoDecoderKey could not be located in the dynamic link library AVFoundationCF.dll

    Taken at face value, you're having trouble with an Apple Application Support program file there. (Apple Application Support is where single copies of program files used by multiple different Apple programs are kept.)
    Let's try something relatively simple first. Restart the PC. If you're using Vista or 7,now head into your Uninstall a program control panel, select "Apple Application Support" and then click "Repair". If you're using XP, head into your Add or Remove Programs control panel, select "Apple Application Support", click "Change" and then click "Repair".
    If no joy after that, try the more rigorous uninstall/reinstall procedure from the following post. (If you've got XP, although the procedure is for Vista and 7, just read "Computer" as "My Computer", read "Uninstall a program control panel" as "Add or Remove programs control panel" and assume the system is 32-bit, and you'll be doing the right things.)
    Re: I recently updated to vista service pack 2 and I updated to itunes 10.2.1 and ever

  • I tried to download the latest upgrade and got the following: "iTunes was not installed correctly. Please reinstall iTunes. Error 7 (Windows error 193).  Program Files/Common Files/Apple/Apple Application Support\ApplePushService.dll

    I tried to download the latest upgrade and I got a message telling me "The application or DLL ProgramFiles/CommonFiles/Apple/Applie Application Support\ApplePushService.dll is not a valid Windows image. Please check this against your installation diskette." and then below that another message "iTunes was no installed correctly. Please reinstall iTunes. Error 7 (Windows error 193).  I tried reinstalling and it still will not work.

    Taken at face value, you're having trouble with an Apple Application Support program file there. (Apple Application Support is where single copies of program files used by multiple different Apple programs are kept.)
    Let's try something relatively simple first. Restart the PC. If you're using Vista or 7,now head into your Uninstall a program control panel, select "Apple Application Support" and then click "Repair". If you're using XP,head into your Add or Remove Programs control panel, select "Apple Application Support", click "Change" and then click "Repair".
    If no joy after that, try the more rigorous uninstall/reinstall procedure from the following post. (If you've got XP, although the procedure is for Vista and 7, just read "Computer" as "My Computer", read "Uninstall a program control panel" as "Add or Remove programs control panel" and assume the system is 32-bit, and you'll be doing the right things.)
    Re: I recently updated to vista service pack 2 and I updated to itunes 10.2.1 and ever

  • Hi,  i installed an upgrade for itunes on my windows computer it came with a error message of msvcr80.dll

    Hi 
    I installed a upgrade of itunes on my windows computer
    It came up with error message of msvcr80.dll     I went to repair and to reinstall itunes   but this didnt fix it
    Please help me

    Uninstall your existing copy of iTunes. Delete any copies of the iTunesSetup.exe (or iTunes64Setup.exe) installer files from your downloads areas for your web browsers and download a fresh copy of the iTunes installer from the Apple website:
    http://www.apple.com/itunes/download/
    (The current build of the 11.1.4.62 installer was changed a few days ago, which fixed the bulk of the reports of MSVCR80.dll/R6034/APSDaemon.exe/Error-7/AMDS-could-not-start trouble ... but the build number on the installer was not changed. So we're trying to make sure you do the reinstall using a "new good" 11.1.4.62 installer instead of an "old bad".)
    Does the install with the new copy of the installer go through properly? If so, does that clear up the error message?
    If you still have the same error messages cropping up, then try the procedures from the following user tip:
    Troubleshooting issues with iTunes for Windows updates

  • I'm trying to install iTunes on my computer running Windows 7 Home Premium.. I'm not sure if iTunes is compatible with it because when I try to install it, it says the installation is complete but it says there was an error so I can't get it! Please help!

    Hellooo Apple Community!
    I'm trying to install iTunes on my computer running Windows 7 Home Premium. I'm not sure if iTunes is compatible with my computer operating system because when I try to install it, it says the installation is completed but it says there was an error so it won't let me get itunes! Can someone please tell me if iTunes can be downloaded and installed on "Windows 7 Home Premium" and if so, how?! I need iTunes asap, I have an iphone 4 running ios 6.1.3. Please get back to mee!!
    Thankyou thankyou thankyou!
    Natalie.

    I just tried running the Lenovo Hard Drive Quick Test both in normal mode and in safe mode.  Both times it indicated a failed read test on the HDD. The last two tests also failed.  I forget what those tests were called.
    I am really beginning to think I have a bad HDD and the problem just happens to be in the reserved partition where my factory system software resides.

  • I updated iTunes from the update message and now my Windows computer (at work- I use Mac at home) keeps sending me error messages about MobileMe and iTunes. It indicates a .dll error but I can't find any such file. I tried removing the entire ITunes app.

    I downloaded an update to my iTunes app on my work Windows computer and now I am constantly getting error messages about MobileMe, when I download a webpage and marked slowness of my Outlook application. I tried removing iTunes and reloading directly from the Apple site, but no change. One of my peers is having the same issue and messages.
    Any suggestions?

    See note 2 in Troubleshooting issues with iTunes for Windows updates for starters...
    tt2

  • Error r6034 in trying to install iTunes on a computer running Windows 7

    In trying to solve the problem of the runtime error R6034, I have tried all of the suggestions but cannot remove Apple Mobile Device.  I moved on to the next program on the list and uninstalled all but that one.  When I rebooted and reinstalled itunes I got the same r6034 runtime Error. 
    When that failed, I went to restore and chose a date that I knew itunes had worked.  But after the restore, I received the same error plus one that said AdCore.dll file is missing.  I'm stuck now since I cannot install iTunes.  BTW, along with Apple Mobile Device not uninstalling, iTunes does not appear in my list of installed programs, so I cannot clean the computer of all apple software.
    Tom

    Hello tct2125,
    The following article provides steps that can help get iTunes successfully updated and running.
    iTunes 11.1.4 for Windows: Unable to install or open
    http://support.apple.com/kb/TS5376
    Cheers,
    Allen

  • Tried to upgrade to iTunes 10.7, got error 7 (windows error 5). How do i fix this?

    Tried to upgrade and install the latest version of iTunes, 10.7 and received an error after install process. Error states that itunes was not installed properly, and a reinstall is necessary. Shows Error 7 (Windows error 5) in the message. No matter how many times I uninstall and reinstall, the same error persists. Already tried the MS .NET Framework upgrades to no avail. Anyone have any idea on how to fix this issue?

    A complete uninstall/reinstall of iTunes and related software components is worth a try (7s can indicate trouble with other software components like Apple Application Support). See the following documents for instructions:
    Removing and Reinstalling iTunes, QuickTime, and other software components for Windows XP
    Removing and reinstalling iTunes, QuickTime, and other software components for Windows Vista or Windows 7
    ... But if no joy there, let's check to see if there's a .NET issue underlying this:
    iTunes for Windows: "Error 7" message when opening iTunes

  • TS3694 Getting "Error 7 (Windows error 126) when trying to upgrade or reinstall iTunes on PC running Widows Vista.  Any suggestions?

    Hello -
    Have been running iTunes on Windows PC for many months.  OS is Vista.  Today when prompted to upgrade iTunes and iCloud Control Panel, the upgrade failed.  Message received was "iTunes was not installed correctly.  Please reinstall iTunes.  Error 7 (Windows error 126).  Also saw a message that said a particular DLL file was missing but don't know specific file name.  Have tried upgrading and uninstalling/reinstalling iTunes several times without success.  Can anyone help?  Thanks.

    Meowia for Error 201 please see Error downloading Creative Cloud applications - http://helpx.adobe.com/creative-cloud/kb/error-downloading-cc-apps.html.  Error 213 indicates there was problem locating the update or an incorrect URL.  The troubleshooting steps are still the same as both errors are related to failure of the current network connection.

  • I get the following error message when trying to download ITunes on my computer running Windows XP - Error writing to file: C:\Program Files\Common Files\Apple Application Support\CFNetwork.dll

    I get the following error message when trying to download ITunes on my computer running Windows XP - Error writing to file: C:\Program Files\Common Files\Apple Application Support\CFNetwork.dll

    For general advice see Troubleshooting issues with iTunes for Windows updates.
    The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach. Review the other boxes and the list of support documents further down the page in case one of them applies.
    The further information area has direct links to the current and recent builds in case you have problems downloading, need to revert to an older version or want to try the iTunes for Windows (64-bit - for older video cards) release as a workaround for installation or performance issues, or compatibility with QuickTime or third party software.
    Your library should be unaffected by these steps but there also links to backup and recovery advice should it be needed.
    tt2

  • I have been using iTunes for years on my PC, using Windows 7. I tried re-installing iTunes but get an error message that says, "iTunes can't start because MSVCR80.dll is missing from your computer."

    After using iTunes for years I suddenly am prevented from opening it. I get the following message: "The program can't start because MSVCR80.dll is missing from your computer. Try reinstalling the program to fix this problem."
    Upon trying to reinstate I am thwarted with this: "iTunes was not installed correctly. Please reinstall iTunes. Error 7 (Windows Error 126) 
    Can anyone help? Thanks.

    Click here and follow the instructions.
    (98818)

  • I had iTunes installed on my windows desktop computer and it suddently disappeared. I tried to reinstall it but get an error message and it won't reinstall

    I had iTunes installed on my windows desktop computer and it suddently disappeared. I tried to reinstall it but get an error message and it won't reinstall

    Try the following user tip:
    Troubleshooting issues with iTunes for Windows updates

Maybe you are looking for