I cannot install ITunes on my Windows 7 computer.

The Itunes file downloads, then starts the installation process, gets almost all the way through it, then I get an error message stating that a critical file is missing from the installer package and installation stops and reverses itself. I have tried uninstalling the prior version of Itunes and reinstalling, cleaning up the registry of all ITunes files, etc., but nothing helps.

It's a complex mix of messages. The new one is suggesting disk/file damage. So it's plausible that the damage creating the "invalid signature" message was happening when the installer files landed on the dodgy spot of disk, rather than during the download itself. (Plausible, but pretty rare.)
Let's move into disk/file damage troubleshooting mode.
The first thing I'd try with that is running a disk check (chkdsk) over your C drive.
XP instructions in the following document: How to perform disk error checking in Windows XP
Vista instructions in the following document: Check your hard disk for errors
Windows 7 instructions in the following document: How to use CHKDSK (Check Disk)
Select both Automatically fix file system errors and Scan for and attempt recovery of bad sectors, or use chkdsk /r (depending on which way you decide to go about doing this). You'll almost certainly have to schedule the chkdsk to run on startup. The scan should take quite a while ... if it quits after a few minutes or seconds, something's interfering with the scan.
Does the chkdsk find/repair any damage? If so, can you get an install to go through properly afterwards?

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I cannot install itunes to my windows 7 computer. I've deleted everthing apple related (in order recommended). I get a message each time that states "There is a problem with this windows installer package. etc.. What should I do?

I've also spent hours on the phone with both apple and windows technical support specialists. This is very clearly not a windows issue. I've given my computer a clean boot, disable my antivirus and firewall, and then attempted to download (yes, from apple's website). I've delete all of the programs (in the necessary order) and then attempted reinstalling with absolutely no luck. I'm starting to think that there's absolutely nothing I will be able to do. I've also never been able to fine "apple software updater or apple software update on my computer, which is particularly odd because I haven't found a post in this community that answers that question. No, "apple software update" cannot be found by accessing the start menu or anything in the "C drive". Apple software update is also never included in the itunes download package that I get from apple's website (the others, such as bonjour, apple application support, and apple mobile support are). No matter what I do, I always get the mesage at the end of the download, "There is a problem with this windows installer package. A program required for this install to complete could not be run. Contact your support personnel or package vendor."
This may or may not be related to the "apple software update" issue.

Apparently it's an itunes issue. I just tried to update and got the same issue. Called att to activate my iphone 4s and they say they can do the swap but apple is telling them itunes is down atm. So will have to wait

How do I install itunes on a windows 8 computer. I keep getting the message that the app cannot run on my computer.

I cannot install itunes on my windows 8 computer. I get the message that the app cannot run on my computer.

Hi mlheidt,
If you are having trouble installing iTunes on your Windows 8 computer you may want to use the following article to help you get it up and running -
Issues installing iTunes or QuickTime for Windows
http://support.apple.com/kb/HT1926
Thanks for using Apple Support Communities.
Best,
Brett L

HT1926 Cannot install itunes Error 7, windows error 1114

Cannot instal Itunes, Error 7, window error 1114 ???

Hi!! I finally found a solution
I´m Sure this one will work for everyone
-First you have to uninstall all Apple Software using Control Panel
-Download Unlocker Software from softsonic heres the link http://tinyurl.com/3e8gj2h
or google it
-Install Unlocker
-Go to Start and type this in search: %programdata%
-ProgramData window will open, so find apple folders
-Right click in each apple folder and find Unlocker in the options
-Choose Delete each apple folders (with unlocker program)
-Go to My PC, C Local Disk and find Program Files
-Look for Apple folders and Delete them (with Unlocker)
-Find a Folder (in Program Files) called Common Files
-Delete all Apple Folders (in common files) with Unlocker
- Empty your trash can (thats what i did)
-Reboot
-Install Itunes
Note: You can Reboot or use Safe Mode to use Unlocker if it doesnt work.
....and that's All
AFTER Days of frustration LOL
Good vibe, Love and Blessings for all!!
Jorge from Mexico

Cannot install itunes on my windows 7 32 bit

Hi, I cannot install itunes on my windoes 7 32bit. I tried installing several times but it wont let me complete it. Sometimes it shows error of 'Windows Installer Service could not be accessed'.
Please help asap.
Regards
Tushar

Sometimes it shows error of 'Windows Installer Service could not be accessed'.
Are other programs also failing to install (with the same error message), Tushar?

Cannot install iTunes because of Windows Installer Package

Cannot install iTunes on Windows 7 because of Windows Installer package is missing.

Okay. Even though you're getting a different error message, try the procedure from the following user tip:
"The administrator has set policies to prevent this installation" error messages when installing iTunes for Windows on Windows Vista and Windows 7 systems

I cannot install itunes on my windows vista

I try to install itunes on my windows vista, it gives me a error

"iTunesSetup.exe não é um aplicativo Win32 válido"
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?

Why cant I install itunes on my windows 7 computer?

I have never been able to load Itunes on my windows 7 computer - any information about fixing this will be wonderful!!

Hi, lesliec1.
You may find this article helpful in troubleshooting iTunes installation issues.
Trouble installing iTunes or QuickTime for Windows
http://support.apple.com/kb/ht1926
Cheers,
Jason H.

TS3074 When trying to install itunes on my windows 7 computer i get the error itunes setup is not a valid 32bit application. Any ideas to rectify please?

When ntrying to istall itunes on my windows 7 computer I get the error message pop-up "itunes setup is not a valid 32bit application" . Can anyone help please?

Let's try the following document with that one:
iTunes: Windows reports that "iTunesSetup.exe is not a valid Win32 application"

Cannot Install iTunes 9 in Windows XP Pro 64-bit

Okay, here's the situation:
I was an early adopter of Vista, in its 32-bit form. Ran fine, lasted a long time. Needed more memory, so installed Vista 64-bit a few months back as part of an upgrade to a larger boot disc.
Initially, the version (whatever it was) of iTunes installed and worked okay, but after an upgrade of Windows and iTunes (done at the same time) killed the whole thing. It installed correctly, but when I ran iTunes, it would hang.
I know about relatively short hangs while trying to connect to the iTunes store, as well as the potentially hours-long hang during the 'gapless playback' process, but these hangs were for more than 12 hours in some cases, and required that I manually end the program.
About a week ago, I decided to go back to XP Professional because several updates had created an unusable environment for iTunes, even with deleting everything Apple and starting over multiple times.
With a clean Windows XP Professional 64-bit install, I thought I might have a chance. Turns out, I was wrong.
I downloaded the latest iTunes 64-bit package, only to be told this is for Windows Vista 64-bit only. Fine. I downloaded the latest iTunes 32-bit package and was greeted with a message that suggested I download the 64-bit version. Are we sure Microsoft didn't buy Apple somewhere along the line? This is not the sort of nonsense I have seen in about 15 years experience with Apple products.
Next I looked for any tricks or tips that might help me do what I wanted. I learned Orca is more than a Sea World attraction, and many other new things. At the end of the day, I cannot find any way to successfully install iTunes 32-bit or 64-bit into Windows XP Professional 64-bit.
Is there anyone that has successfully installed the latest iTunes (32- or 64-bit versions) into XP Pro 64-bit without hacking, cracking or smacking their system? Anyone? If so, I would love to hear how it's done.
It's painfully obvious that Apple never tested this O/S or they might have fixed the problem before releasing iTunes 9.
Although my iPhone contract ended about two months ago, I'm not rushing out to get a new phone until this problem is resolved. Currently it is essentially a paperweight as I have no access to some application updates that will only complete when it is tethered.

Follow the directions here. But the problem is that the I-tunes installer calls for the wrong file name so… if you rename the file named “AppleMobileDevice64.msi” to “AppleMobileDevice.msi” it should install. When it says “iPod service failed to start…” run this patch then click “retry” it’ll work fine. Merry Christmas from Lokie!
P.S. Please repost the patch thanks

Cannot install Itunes 8 on windows - please help

I had an issue with Itunes re-installing each time I would start Itunes, so I deleted off computer via add/delete feature on windows.
I also deleted Bonjour and everything apple so I could start again.
Now trying to install from scratch the Itunes 801 it now states "Service (Bonjour Service) failed to start. verify that you have sufficient priviledges to start system services."
I have tried to install Bonjour again but there is an issue with that too.
I just want to play some music, any suggestions?
Windows XP home premium edition

I get a very similar error message and cannot install version 8
Any suggestions as to what can be done ?

Cannot install Itunes 8 on windows

I had an issue with Itunes re-installing each time I would start Itunes, so I deleted off computer via add/delete feature on windows.
I also deleted Bonjour and everything apple so I could start again.
Now trying to install from scratch the Itunes 801 it now states "Service (Bonjour Service) failed to start. verify that you have sufficient priviledges to start system services."
I have tried to install Bonjour again but there is an issue with that too.
I just want to play some music, any suggestions?
Windows XP home premium edition

I get a very similar error message and cannot install version 8
Any suggestions as to what can be done ?

Cannot install iTunes 8 on Windows XP

I wanted to install iTunes 8 on my computer. There comes an error message saying "bonjour applet cant be installed, you have not enough admin. rights".
It is my computer so i should have ALL admin. rights. Can anyone help me? Do I need internet access?
Many Thanks
Fightgirl

I get a very similar error message and cannot install version 8
Any suggestions as to what can be done ?

TS1424 I cannot install iTunes on my Windows 7 PC without it taking over all my applications and replacing their icons.

I initally installed iTunes several months ago to sync with my iPod. In July I got an iPad and switched to wireless internet service. At some point iTunes decided to take over my Windows 7 (Professional) PC computer! If I uninstall iTunes, everything is fine, but I have to restart the computer to reset my icons. As soon as I reinstall iTunes, it takes overf all my desktop icons and software programs.
I have run disk scans, malware, virus scans; I have unintstalled all Apple products and then tried re-installing iTunes to no avail.

First I'd set up a System Restore point. Then try applying the LNK registry fix from the following document:
File Association Fixes for Windows 7
Does that get your icons back to normal?

I am not able to install itunes in my windows XP computer because it does not have service pack 3. what can I do?

Dear friends,
I want to transfer files between my windows XP computer and my Ipad4. I am not able to install itunes on my computer because it does not have service pack 3. What can be done? Please help?

Have you tried installing Service Pack 3 ? You should be able to try installing it via Windows Update in the windows start menu

I cannot install ITunes on my Windows 7 computer.

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