When updating 11.3, windows 7, error message "itunes has an invalid signature"

when updating 11.3 in windows 7, get error message "itunes has an invalig signature"

That suggests that the installer is getting damaged during the download.
I'd first try downloading an installer from the Apple website using a different web browser:
http://www.apple.com/itunes/download/
If you use Firefox instead of IE for the download (or vice versa), do you get a working installer?

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Trying to update to iTunes 10.5, keep getting message "iTunes has an invalid signature. It will not be installed". Others are also posting this problem but can't seem to find any answers

Trying to update to itunes 10.5, keep getting message "iTunes has an invalid signature. It will not be installed". Others are also posting a similar problem but can't find any answers.

Please can anyone help on this

While downloading the newest version, I receive an error saying itunes has a invalid signature and wil not download. Help!!!!!!

When downloading the newest version, I get an error message saying iTunes has an invalid signature and will not be downloaded. Help!!!!!

Thank you for using the Apple Support Communities
I am assuming you are having difficulties installing the latest version of iTunes. Are you using a Windows PC or a Macintosh? Which version of Windows or OS X are you using?

Error "itunes has an invalid signature". Will not install. Why?

Every time I try to update iTunes on my desktop computer I keep getting the same error message "iTunes has an invalid signature. Will not install. Why am I getting this message? and how can I fix it.
ITunes came with the new HP I purchased in 12/2013. I have had a problem only with updates. I thought about uninstalling on my desktop but do not want to lose my songs. Was hoping to find a better solution than uninstalling and then re-installing.
Any how would be appreciated.

The error suggests some sort of corruption with the file you downloaded. Clear your browser's cache and download a fresh copy of the iTunes setup file.
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.
Your library should be unaffected by these steps but there is backup and recovery advice elsewhere in the user tip.
If you are running 64-bit Windows and the above steps haven't helped try installing the version of iTunes that can be downloaded from this support document. iTunes 12.1 for Windows (64-bit — for older video cards)
tt2

When I try to download the latest version of iTunes on my iPod Classic I get the message that "iTunes has an invalid signature" and that "Content was blocked because it was not signed by a valid security certificate. Anyone know how to fix this?

When I try to download the latest version of iTunes from apple.com, I get the message "Content was blocked because it was not signed by a valid security certificate."When I open iTunes and try to download the latest version there, I get the message "iTunes has an invalid signature. The download has been removed." I have also gotten an Internet Script Error stating that an error has occured in Line 0, Char O and that "Access is denied to images.apple.com/global/scripts/lib/iepngfix.htc." This problem has never occurred with earlier versions of ITunes. Anyone know how to fix this problem?

Are you downloading iTunes form an Apple website or somewhere else? If the answer is somewhere else, try downloading it from Apple. Click on iTunes in the black menu bar above and go from there.
Let us know what happens.

When I try to update to Itunes 11 I get an error message saying that Itunes has an invalid signature and wont be installed. I use Windows 7.

Everytime I try to update to Itunes 11 I get an error message saying that Itunes has an invalid signature and can't be installed? I have tried to install it two times and get the same message each time. Any solutions to my problem?? Those who have installed ITUNES 11 is it hard to work with? maybe im lucky it wont update?? I don't know.

That suggests that the installer is getting damaged during the download.
I'd first try downloading an installer from the Apple website using a different web browser:
http://www.apple.com/itunes/download/
If you use Firefox instead of IE for the download (or vice versa), do you get a working installer?

TS2529 Im am using Windows 7 ,I log onto to itunes and connect my Iphone.When my iphone tries to sync it gives an error message "itunes has stopped working" - this only happens when i connect my iphone and it tries to sync - help please

Im am using Windows 7 ,I log onto to itunes and connect my Iphone.When my iphone tries to sync it gives an error message "itunes has stopped working" - this only happens when i connect my iphone and it tries to sync - help please

Many thanks.
With those symptoms, I'd try the following document:
Apple software on Windows: May see performance issues and blank iTunes Store
(If there's a SpeedBit LSP showing up in Autoruns, it's usually best to just uninstall your SpeedBit Video Accelerator.)

HT4061 When proforming the new iPhone update I received an error message-iTunes has detected an iPhone in recovery mode. You must restore this iPhone before it can be used with iTunes. If I choose to restore will i get everthing back. Like my photos et

When performing the new iPhone(IOS6) update I received an error message - iTunes has detected an iPhone in recovery mode. You must restore this iPhone before it can be used with iTunes. Will I lose everything if it goes back to factory settings. Right now my phone wont do anything. It is just showing a cable, an arrow and the iTunes logo.

If you restore from backup.
You should have made sure that everything was on your computer bef ore updating anyway. Did you fail to do that?
All pics taken with iphone should be imported to your computer regularly as you would with any digital camera, most especially before any update/restore/etc. Did you fail to do that?

Trying to update iTunes and i get an error message saying something about "invalid signature". Help?

Trying to update iTunes and i get an error message saying something about "invalid signature". Help?

" The feature you are trying to use is on a network resource that is unavailable. I tried to uninstall iTunes, and it would not uninstall. It gave me the following message " The path C:\documents and settings\network service\local settings\application data\apple\apple software update\iTunes.msi cannot be found.
Download the Windows Installer CleanUp utility from the following page (use one of the links under the "DOWNLOAD LOCATIONS" thingy on the Major Geeks page):
http://majorgeeks.com/download.php?det=4459
To install the utility, doubleclick the msicuu2.exe file you downloaded.
Now run the utility ("Start > All Programs > Windows Install Clean Up"). In the list of programs that appears in CleanUp, select any iTunes entries and click "Remove", as per the following screenshot:
Quit out of CleanUp, restart the PC and try another iTunes install. Does it go through properly this time?

Unable to update iTunes. Get 'iTunes has an invalid signature. It will not be installed.' When I reboot, get message 'Apple Sync Notifier.exe entry point not found'

Unable to update iTunes. Get 'iTunes has an invalid signature. It will not be installed.' When I reboot, get message 'Apple Sync Notifier.exe entry point not found'
Please help...need to get newest update so I can activate my new IPhone4. Thanks

That suggests that the installer is getting damaged during the download.
I'd first try downloading an installer from the Apple website using a different web browser:
http://www.apple.com/itunes/download/
If you use Firefox instead of IE for the download (or vice versa), do you get a working installer?

ERROR MESSAGE: ITUNES HAS STOPPED WORKING

Hi guys n girls, i was wondering if antonehas had the same probs as me, and ill try to explain what happens, After buying an ipod classic 120gb, i downloaded itune 8 for the firs time and it installs, then windows installer asks you "wouldyou like to open itune" so, i click yes, i set it all up, sort out a library, sync to ipod which is all fine, ipod works great.. Now if i close itunes, and open it again another time i get an error message,"itune has stopped working and windows is looking for solutions" and this does it evertime i click onto the icon and the quicktime icon aswell. now ive remove all of itune, quicktime, bonjour, apple updater and mobile support includeing a file to do with apple including some of the music that becomes attactched to it and checking system 32.i then download a fresh itues, it installs, works for the first time and thats it, i get the message again. i have uninstalled and installed intune including various products several time but to no sucess with getting itune to work. if anyone can possibly help me with this as ipod dont bounce off of walls very well cheers
bazza
bazdonsop

please sombody help me, apple support are no help, the shop are no help, the only thing i havent tried is delete everything on my laptop and put it back to factory, which is my very last resort

I am trying to upgrade to iTunes 11.4 and get an error message that says " iTunes has an invalid signature. It will not be installed" How do I fix that?

I am trying to upgrade to iTunes 11.4 on my Windows7 PC and get an error message that says " iTunes has an invalid signature. It will not be installed" How do I fix that?

Hi curliejo,
Welcome to the Apple Support Communities!
In your situation I would recommend the steps in the following article for troubleshooting iTunes. It may be necessary to completely remove and reinstall iTunes in this situation. Be sure to remove all of the components with iTunes in the correct order as outlined in the article before installing fresh.
Issues installing iTunes or QuickTime for Windows
Have a great day,
Joe

I am trying to update i Tunes to new version i get a message saying iTunes has an invalid signature and will not install.Any help please.

I am trying to update iTunes to new version .
When it goes to install i get a message saying iTunes has an invalid signature and will not install.
Any help please.

Go directly to Apple link to download
http://support.apple.com/kb/DL1426
Select "Save" instead of "Run". Once downloaded, double click the iTunesetup.exe to install.

Error message -ITunes has detected a problem with your audio config...HELP

error message - itunes has detected a problem with your audio configuration. audio/video playback may not operate properly...
ive gone through the itunes support steps such as reinstalling quicktime and itunes and nothing seems to work... itunes still open...but then nothing plays...please help me

I've cobbled together a few ideas courtesy of some posts made by the inimitable b noir concerning this particular problem .
First ...
... let's try swapping out your QuickTime, taking a few additional explicit precautions this time.
head into your Add/Remove programs. uninstall QuickTime.
Next, we’ll manually remove any leftover program files and folders.
1. On the Start menu, click My Computer (or double-click My Computer on the Desktop).
2. In My Computer, open Local Disk.
3. Open Program Files.
4. Right-click on the QuickTime folder and click Delete from the shortcut menu.
5. Navigate to C:\Windows\system32\.
6. Remove the files QuickTime.qts and QuicktimeVR.qtx.
7. Restart your computer.
next, we'll get a fresh copy of QuickTime into your PC by doing a repair install of itunes.
switch off antivirus and antispyware applications prior to the repair install.
go into Add/Remove and select itunes. click "Change" and then click "Repair".
if the repair install goes through okay, restart the PC and try launching itunes again. does it launch properly now?
Next ...
If you're still getting the message with a fresh quicktime in place, let's check to see if something is awry with your sound card.
Open your "Sounds and Audio Devices" control panel. Click the "Audio" tab. Is the correct default device showing up in the "Sound Playback" area?

"iTunes has a invalid signature" when updating to 11.1

I was trying to have iTunes updated to version 11.1 but It failed to download first before install, then I clicked download only and the message popped up saying "iTunes has a invalid signature". Why I keep getting this? and How can I fix it?
I'm running Windows 7 64-bit.

Hello mms math 8,
Thank you for using Apple Support Communities.
For more information, take a look at:
iOS devices: Keeping device within acceptable operating temperatures
http://support.apple.com/kb/ht2101
Use iTunes to restore your iOS device to factory settings
http://support.apple.com/kb/ht1414
Use iTunes to back up your device and transfer and sync any additional content to your computer.
iPhone and iPod touch: Charging the battery
http://support.apple.com/kb/ht1476
About battery life and the battery
Battery life and number of charge cycles vary by use and settings. Find more information about batteries foriPhone and iPod.
Find information on how long the battery is expected to last between charges.
Rechargeable batteries have a limited number of charge cycles and may eventually need to be replaced.
http://www.apple.com/batteries/iphone.html
Have a nice day,
Mario

When updating 11.3, windows 7, error message "itunes has an invalid signature"

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