I can't update itunes due to an invalid signature?

The download starts but half way through the process a prompt appears saying the download can not be completed due to itunes having an invalid signature, what can i do to rectify this problem? Will i lose sync'ed data associated with my iphone if i uninstall?

If you have problems with updating or with the permissions then easiest is to download the full version and trash the currently installed version to do a clean install of the new version.
Download a new copy of the Firefox program and save the DMG file to the desktop
* Firefox 4.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Firefox 3.6.x: http://www.mozilla.com/en-US/firefox/all-older.html
* Trash the current Firefox application to do a clean (re-)install
* Install the new version that you have downloaded
Your profile data is stored elsewhere in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder], so you won't lose your bookmarks and other personal data.

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Can't launch itunes due to the following error; The procedure entry point AVCFPlayerAppliesMediaSelectionCriteriaKey could not be located in the dynamic link library AVFoundationCF.dll.

Can't launch itunes due to the following error; The procedure entry point AVCFPlayerAppliesMediaSelectionCriteriaKey could not be located in the dynamic link library AVFoundationCF.dll.

Hey bcolden,
I would try uninstalling and reinstalling following the directions in here:
Removing and reinstalling iTunes and other software components for Windows Vista, Windows 7, or Windows 8
http://support.apple.com/kb/HT1923
This section in particular contains important information in the uninstall process:
Use the Control Panel to uninstall iTunes and related software components in the following order and then restart your computer:
iTunes
Apple Software Update
Apple Mobile Device Support
Bonjour
Apple Application Support (iTunes 9 or later)
Important: Uninstalling these components in a different order, or only uninstalling some of these components may have unintended affects.
Let us know if following that article and uninstalling those components in that order helped the situation.
Welcome to Apple Support Communities!
Best,
Delgadoh

I can't update iTunes. It says "The feature you are trying to use is on a network resource that is unavailable...

I can't update iTunes. It says the feature you are trying to use is on a network resource that is unavailable.

It says Click Ok to try again or enter an alternate path to a folder containing the installation package itunes64.msi in the box below
(1) Download the Windows Installer CleanUp utility installer file (msicuu2.exe) from the following Major Geeks page (use one of the links under the "DOWNLOAD LOCATIONS" thingy on the Major Geeks page):
http://majorgeeks.com/download.php?det=4459
(2) Doubleclick the msicuu2.exe file and follow the prompts to install the Windows Installer CleanUp utility. (If you're on a Windows Vista or Windows 7 system and you get a Code 800A0046 error message when doubleclicking the msicuu2.exe file, try instead right-clicking on the msicuu2.exe file and selecting "Run as administrator".)
(3) In your Start menu click All Programs and then click Windows Install Clean Up. The Windows Installer CleanUp utility window appears, listing software that is currently installed on your computer.
(4) In the list of programs that appears in CleanUp, select any iTunes entries and click "Remove", as per the following screenshot:
(5) Quit out of CleanUp, restart the PC and try another iTunes install. Does it go through properly this time?

Can't install itunes due to a problem with windows installer package

hello there i can't install itunes due to a problem with the windows installer package i found a page on this site (here is the link) http://docs.info.apple.com/article.html?artnum=304405 i done every thing on it and i still haven't been able to fix the problem i have tryed the following unstalling itunes deleteing the registry keys deleteing all the temp files disableing all anit-virus software and anit-spyware. runing cc clearner downloading a new installer for itunes and windows installer and the script thing. and trying to reinstall. nothing seems to work i don't know what else to do this is the error message i get when i try to install i tunes. "there is a problem with this windows installer package.
A program required for thsi install to complete could not be run.
Contact your suupport personnel or package vendor."
Please Help i would be most greatfull for any advise given
Message was edited by: Joe_TLC

I pulled my brains out trying to figure this bug out and I may have a solution for you.
All of it installed fine in my desktop, but a friend's laptop got the error you mentioned on quicktime, itunes, flash, officeXP and about anything else I tried to load for him.
If you look in: C:\documents and settings\<username>\Local Settings\Temp there will be an iTunes install log...open it in Notepad and see if it isn't exiting with a 1619 error while running msiexec.exe
If this is the case, this fix should work for you.
Seems some configurations of XP (and possibly Vista) aren't allowing full administrator rights to the account you set up when you installed XP (even though User Editor says you do have those rights.)
I read 2 MS articles and turned off simple file sharing, then gave ownership of the entire C: drive to the administrator. Logged the admin account off, logged his "admin" account in, and then gave rights to his personal directory to his account (c:\docs and settings\<username>)
Once I did that, every install that had previously errored out performed flawlessly.
The MS articles in question:
http://support.microsoft.com/?kbid=316309 (1619 error)
and
http://support.microsoft.com/?kbid=308419 (how to set special permissions)
Hope this helps!
Doc

Can not update iTunes because I have iMac with 10.5.8 . How I will sync my iphone 6.0 with an older version of iTunes on my iMac???? There is no update for the software of my iMac and no update for the iTunes.... So how can I sync????

Can not update iTunes because I have iMac with 10.5.8 . How I will sync my iphone 6.0 with an older version of iTunes on my iMac???? There is no update for the software of my iMac and no update for the iTunes.... So how can I sync????

Requirements for iPhone 5:
Syncing with iTunes on a Mac or PC requires:
Mac: OS X v10.6.8 or later
PC: Windows 7; Windows Vista; or Windows XP Home or Professional with Service Pack 3 or later
iTunes 10.7 or later
The highest version of iTunes you can install is 10.6.3 which will not sync with the iPhone 5.
Roger Wilmut1 wrote:
It's always a good idea to check the requirements before purchasing.
The person I spoke with at 1-800-MY-APPLE gave me totally different info...she said the iPhone 5 would in fact sync with the older version of iTunes and that I could restore from my previous iPhone 4 backup and also bring in my music that way. Hmmm....
I'm inclined to go by the published specs, but now I have to jump thru a bunch of hoops I wasn't expecting to.

HT1925 Can't update iTunes because of error message "iTunes.msi is not a valid installation package for the produce iTunes". How can I fix this?

I can't update iTunes because of error message "iTunes.msi is not a valid installation package for the product iTunes". How can this be resolved. I am using a PC with Windows XP

If you can, uninstall and reinstall itunes..... Removing and Reinstalling iTunes, QuickTime, and other software components for Windows XP
Hope this helps.

HT201210 what is the 'other' section of storage on my iPhone? I can't update iOS7 due to lack of storage!! And I have deleted almost everything.

I can't update iOS7 due to lack of space for the upgrade. I have hardly any songs, apps and pictures yet there is this 'other' storage which is over 4GB. What is it and how can I reduce it?

Thanks, I ended up just going to Apple and returning it and upgrading to a 16GB Iphone and just paying the price diffence. They had no problem doing that. So, for $100 plus 10% restocking, I got a brand new, double the capacity, Iphone.

Can't update itunes. I get " The feature you are trying to use is on a CD-ROM or other removable disk that is not available

Can't update itunes. I get " The feature you are trying to use is on a CD-ROM or other removable disk that is not available"

I am getting this same message when it tries to install it is Itunes.msi
(1) Download the Windows Installer CleanUp utility installer file (msicuu2.exe) from the following Major Geeks page (use one of the links under the "DOWNLOAD LOCATIONS" thingy on the Major Geeks page):
http://majorgeeks.com/download.php?det=4459
(2) Doubleclick the msicuu2.exe file and follow the prompts to install the Windows Installer CleanUp utility. (If you're on a Windows Vista or Windows 7 system and you get a Code 800A0046 error message when doubleclicking the msicuu2.exe file, try instead right-clicking on the msicuu2.exe file and selecting "Run as administrator".)
(3) In your Start menu click All Programs and then click Windows Install Clean Up. The Windows Installer CleanUp utility window appears, listing software that is currently installed on your computer.
(4) In the list of programs that appears in CleanUp, select any iTunes entries and click "Remove", as per the following screenshot:
(5) Quit out of CleanUp, restart the PC and try another iTunes install. Does it go through properly this time?

Can't update iTunes in Mac OS X, 10.7.4

I can't update iTunes with Software update and direct download from Apple website.
My MacBook Pro is 13-inch Late 2011 Mac OS X, 10.7.4 in Macintosh HD.
My iTunes version is 10.6.3 and I can't update to newer version so I can't connect any of my idevices to iTunes.
Can anyone help me?
Thank alot...

Make sure you update OS X to 10.7.5 then retry.
http://support.apple.com/kb/DL1583

HT5654 I often travel abroad and my host has changed Internet provider. Then my service was interrupted and I can't update iTunes. Any tips to stop the error messages?

I often travel abroad and my host has changed Internet provider. Then my service was interrupted and I can't update iTunes. Any tips to stop the error messages?

Wow! At least on Apple TV, problem solved. Apple: what's not to love? Please give me credit if you use it in marketing campaigns... ;-)

BONJOUR: I can't update itunes because it says i don't have "sufficient priviledges". When i go into properties, it's disabled. I can't set ti to automatic because it say scheduled for deletion. HELP

BONJOUR: I can't update Itunes because it keeps saying i don't have "sufficiant priviledges". When i go into properties, it's set to disabled. When i try to change it to automatic it say "scheduled for deletion". HELP

Thanks alot
It worked 100%
I shut down my computer every night
That must not be the same thing as restarting it
Anyway, it updated just fine
Thanks again

HT5191 i can't update iTunes 10.6.1

i can't update iTunes. i got this message: The file “iTunesXPatch.pkg” couldn’t be found on the server “swcdn.apple.com”.
what should i do?

I was prompted to the newest version 10.6.1, downloaded it and then my computer crashed. Now I have a corrupted version of 10.6.1 and the website only lists the 10.6.dmg to be downloaded.
I can't run any version of iTunes until I can download the 10.6.1.dmg. Any idea where I can find it?

I can't update iTunes to 12.0.1

Hello,
I can't update itunes to 12.0.1. When I click "update", it gets loaded from the app store, but doesn't do the update. I tried several times, also after rebooting. The (not working) update is in the list of past updates though: http://cl.ly/image/2x1K2u2A1B2o

Hi,
Try downloading dmg from Apple.com. I had this problem which was resolver by doing this.
Jim

I can't update itunes to 11.0.4 on windows 7

I can't update itunes to 11.0.4.
When I try to update a message pops up saying "the feature you are trying to use is on a network resource that is unavailable". The same thing happened with the last update. I had to uninstall and download the new version.
Every other update has worked on this laptop until then. I've just updated itunes on the other two laptops without any problems.
Any ideas?

I've tried again but it's still not working. This time a message appears saying iTunes64.msi file not found. Check the file name and try again.

I can't open Itunes due to error -45075. What do I do?

I can't open Itunes due to error -45075. What do I do?

I Had this problem along with the error message that it's missing the driver GNSDK_DSP.DLL. I am Windows XP and fixed the error by going to Start>My Computer>Add or Remove Programs
When the Add or Remove programs list is "populated", Find iTunes on it. Click the link that says "For more information" and the iTunes box will expand. You will see a button that says "Repair" and it says to reinstall the program if it is not working correctly, use the "Repair" button. I clicked the Repair button and it automatically started the reinstall. When all the progress bars disappear (it doesn't really give you any other indication that its done) click the "close" button and try to open iTunes again. It worked first time for me. I also saw another forum where someone said it worked for the other Windows versions by following the same route, just that in other windows versions it might be "Computer" instead of "My Computer" and the Add or Remove Programs function is also called something else. Hope this helps somebody having this problem. It drove me crazy finding the answer, but the fix was super simple once I found out what to do.

I can't update itunes due to an invalid signature?

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