Cannot download 10.5 -invalid signature

Trying to set up my new iphone through itunes but it says I need the new 10.5 version. When I try to download it, it stops halfway through and says 'itunes 10.5 cannot be downloaded due to invalid signature' and then just closes. Help!

Safari on the iPad can't download anything other than images which you can save.
iTunes on your iPad consists of 4 apps which are included with the iOS: iTunes (a portal to the iTunes Music Store), App Store (a portal to the iTunes App store), Music (plays your music), and Videos (plays your videos).
Reverting back to a prior iOS is not supported.
Here is the iPad iOS 5.1 User Guide

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ITunes upgrade won't download due to 'invalid signature'

I have a 2nd Generation iPod Touch which will not download any iTunes software upgrades when prompted to do so. The first error message advised me to go to Tools, then Download Only (which I did). The next error message said that iTunes has an invalid signature.
There is a very useful health related app I want to use but my software needs to be upgraded first. Can anyone help me please?
Thanks very much, NathalieS

I would delete the download and redownload the updat file. It is located here for a PC
ipsw location
For a Mac you the Fibder search and search for *.ipsw

Cannot download tells me invalid serial number

Will not let me download, says invalid serial number

Jeff,
Thank you for the previous email with the link. I was able to obtain both serial numbers from there. So, there is not a problem with the number, it was me using the same one. If I ever do encounter a problem I’ll contact the support team.
Again, Thanks,
Barb

Auto Downloads always get "Invalid Signature"

There must be someone out there that has an answer to this. It only started happening within the last 6/8 months. I’ve tried the repair to the Apple Updater it doesn’t work for me the idea that it’s something to do with the wifi router can’t be as we have a laptop working ok (using W7) It can’t just be Explorer as It won’t work with Chrome. Could it be a Microsoft Problem? The only way I‘ve managed to download iTunes is direct fom Apple by overriding blocked content and that only works through Explorer.

Try a search for similar issues and possible resolutions.

I have Windows 8 on my computer. I have Itunes 10 installed, but I cannot download Itunes 11. An error message says that Itunes has an invalid signature. Can anyone help?

My computer has Windows 8. I keep getting an error message when I try to download Itunes 11----Invalid signature. Can anyone help?

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?

My PC is telling me apple software updates have an invalid signature ?

I'm having real problems with updates to ITunes and all Apples software, every time i try to download I get "Invalid Signature" and it will not load. Even when I access ITunes help the page gives me a warning that it dose not have a valid certificate and is not safe to continue.

What is the exact wording of the message?
It sounds like you have exceed the five computer maximum. If you computer crashed and you have to reinstall the operating system, and you now authorize the computer again, you will have two computer authorized unless you deauthorized the computer before it crashed.
As discussed in the article yo can deauthorize all (but only onceper year).
iTunes Store: About authorization and deauthorization

I cannot update iTunes because when I run the Apple Software Updater, it says "'iTunes QuickTime' has an invalid signature. It will not be installed." If I try downloading only it says "'iTunes cannot update. Invalid signature.

I cannot update iTunes because when I run the Apple Software Updater, it says "'iTunes + QuickTime' has an invalid signature. It will not be installed." If I try downloading only it says "'iTunes cannot update. Invalid signature. Can someone help?

This forum is for questions from those managing sites on iTunes U, Apple's service for colleges and universities to post educational material in the iTunes Store. You'll be most likely to get help with this issue if you ask in the general iTunes for Windows forums.
Regards.

New version of itunes wont download to my pc it keeps saying i have an invalid signature and stops the download. How can i fix this?

When i try to download the new version of itunes my computer says it cannot download and tells me to click the download only option. When i do this it then tells me the download has been stopped due to an invalid signature.
How can i fix this?

That one suggests the installer has gotten 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?

Cannot remove a older version of bonjour, and when i tunes installs it says it wont because of invalid signature

cannot remove an older version of bonjour and invalid signature are two messages i receive when tryin to install a new itunes

cannot remove an older version of bonjour
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 Bonjour entries and click "Remove", as per the following screenshot:
Quit out of CleanUp, restart the PC and try another install. Does it go through this time?

Cannot install Upgrade to iTunes 11.1.3 "Invalid signature"

Recently upgraded to IOS7. iPad cannot connect to PC as "... cannot be used because it requires iTunes version 11.1 or later". When I try to update iTunes to 11.1.3, it stops downloading with error message "iTunes has an invalid signature. It will not be installed". In a 'Catch 22' situation. Please help!

They changed the way but its still very easy. All you have to do is copy your music by using keyboard commands.
Steps (for MAC)
1. Click (ONLY ONCE) on your chosen music files outside of Itunes.
2. press Command + C
3. go to your itunes
4. press Command + V
For PC ,its the same
- the same stuff but instead of pressing the Command key, its Ctrl .

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.

HT1926 Trying to download itunes update on my computer windows Xp... Tried 3 times and keep getting an error: invalid signature/will not be installed. HELP

iTunes is downloaded, been using it for years. I went to download an update and I keep getting an error.Error message is: invalid signature/will not install.
I did try to update manually as instructed however that also came with the same error.
If someone can advise it would be greatly appreciated.
So what is an invalid signature and how to fix it???

I would think the link doesn't work now as we are on version 10.7.
If you go to:
http://support.apple.com/downloads
the latest update for itunes is in the left hand column. If you follow the rest of the instructions from wiclee/fimeck it should work.
"Select "Save" instead of "Run". Once downloaded, right click the iTunesSetup.exe or iTunesSetup64.exe and select 'Run as Administrator' to install." (or use default)

Itunes cannot be updated because it has an invalid signature

I am trying to update my itunes as well as my icloud on my computer. When I update them, I get an error message that tells me it cannot be updated because of an invalid signature. Since I cannot update either of them, I cannot do the new iso8 update on my computer.
Help!

try this. it worked for me.
http://en.kioskea.net/faq/11771-allowing-software-with-invalid-signature-to-run- or-install

Itunes 10.7 wont startup or run on windows 7 64 bit,, while downloading it from previous version of itunes say invalid signatures.

whenever i used to download something from itunes it restarts in mid,, and starts again and does the some for a long time and atlast says error 8008. Then i tried to upgrade it new itunes would download for some time then gives error saying invalid signatures,, I then downloaded itunes 10.7 from apple website.. download completes and it wont run.. wont start up.. I have tried Run as administrator used new user accounts, downloaded it again and again deleted temp folder aswell, deleted itunes library from my music folder aswell, done everything i found in discussions but that wont help,

Apologies about the delay. I've been brooding.
Although we don't know where the specific relevant keys are on modern versions of iTunes, there's a shotgun approach we can take to dealing with them, which has a reasonable chance of success in this case. The complicating factor in your case is that you've got a 64-bit Windows. So there's an extra hoop to jump through.
The basic approach is the procedure from the following weblog entry:
[Solving setup errors by using the SubInACL tool to repair file and registry permissions|http://blogs.msdn.com/astebner/archive/2006/09/04/solving-setup-err ors-by-using-the-subinacl-tool-to-repair-file-and-registry-permissions.aspx]
The complicating factor is that we have to make an additional edit to the reset.cmd file.
When you're in Notepad, replacing the two YOURUSERNAME values with the name of your Windows 7 user account, in the first line of the batch file, replace the:
%programfiles%
... with:
%ProgramFiles(x86)%
(On a 64-bit Windows system, subinacl is installed in a different location than on 32-bit systems. So unless we make that change, the reset.cmd isn't going to be able to find subinacl and the reset.cmd won't work.)
While you're in Notepad editing the file, make sure each of the nine lines of the file start of a new line. (Sometimes they get smooshed up together on a single line, and then again the reset.cmd won't work.)
I'd strongly suggest setting up a System Restore point immediately prior to running the reset.cmd. There's instructions on that in the following document:
http://www.bleepingcomputer.com/tutorials/tutorial143.html#manual

Photoshop CC extension with invalid signature and Photoshop default installed extensions cannot be loaded

I have a Creative Cloud subscription for Photoshop CC. All Creative Clouds products are updated to the latest versions. When I tried to install Tony Kuyper's TKActionv3 Photoshop extension using the Adobe Extension Manager CC on my PC desktop, I received an error message the extension contained an invalid signature and wouldn't be installed. I had previously installed the extension on my laptop without any problems. At the same time, I also noticed the default installed Photoshop CC extensions (e.g., Adobe Exchange, Kuler, Mini Bridge, Behance) could not be loaded using the Windows/Extension command. I receive an error message that the command could not be completed because the extension could not be loaded. After contacting Tony Kuyper, he suggested that I try the steps mentioned in the following weblink: https://forums.adobe.com/message/6029768. The steps basically consist of uninstalling and reinstalling all the Creative Cloud apps associated with Photoshop CC. I tried the steps multiple times, but I am still having the same problems. I can find the default installed Photoshop CC extensions on my machine, so I don't know why they can't be loaded.
I posted this question in the Extension Manager group. Should I also post it in the Adobe Photoshop group?
Thanks for your assistance,
Mark Curtis

Zhihong,
I received your e-mail with the questions below. I answered some of your questions: answers in red and underlined. In addition to posting in the forum, I also replied to your e-mail address, but the message was returned as undeliverable. What e-mail address should I use for sending you the log files.
Thanks,
Mark
Hi Mark,
Here is a workaround to make the extension display again:
You can bypass the check for extension signature by editing the CSXS preference properties file, located at:
• Win: regedit > HKEY_CURRENT_USER/Software/Adobe/CSXS.5
• Mac: /Users/<username>/Library/Preferences/com.adobe.CSXS.5.plist
Add a new entry “PlayerDebugMode” of type "string" with the value of "1". And then restart Photoshop and try again. Please let us know if this work around can work.
And could you please help to offer following information for us to find the root cause? Thanks:
1. Which PS version are you using? On what platform, Windows or Mac OS? Photoshop CC (64-Bit) 14.2.1 x64, Windows 7 Ultimate (64-Bit)
2. The extension cannot be loaded since when? 5/25/2014
3. What is the version of imslib.dll/.framework and PlugPlugOwl.dll/.framework? It locates at path like “C:\Program Files\Adobe\Adobe Photoshop CC (64 Bit)”. 7.0.0.145, 4.2.0.36
4. Can you get the CSXS log and send it to us? Please add a “LogLevel” key with value “6” in registry (PS should be restarted for the log level change to take effect):
• Win: regedit > HKEY_CURRENT_USER/Software/Adobe/CSXS.5
• Mac: /Users/USERNAME/Library/Preferences/com.adobe.CSXS.5.plist
Then restart PS and the log file will be generated at:
• Win: C:\Users\USERNAME\AppData\Local\Temp\csxs5-PHSP.log
• Mac: /Users/USERNAME/Library/Logs/CSXS/csxs5-PHSP.log
Thanks!

Cannot download 10.5 -invalid signature

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