Unable to install itunes 7.5 becasue of invalid signature

I just bought a new iPod touch and it is my 3rd iPod.
i have been trying to download the lastest version of iTunes and everytime i try to download it, it says "unable to download itunes 7.5 becuase of invalid signature."
please Help. i have no idea what to do.

I can't help you, but I am having the same error message : 1921. I bought a new ipod nano and cannot use it because of this. Installation seems to be going fine until it stalls at the part where it says Status: Stopping Services. I don't have dial-up so I don't think that's the issue. I have contacted Apple support and all they can say is to look on the discussion board, continue to look on the help page, and read an article that says this happens when you try to install itunes 5, and that it could be that Windows Management Istrumentation service isn't running on your computer OR that Norton Interntet security 2005 is running on the computer. To resolve this issue, install itunes 5.0.1 or later. This makes no sense because I am trying to install itunes 7.5.
I have tried to uninstall itunes and I get another error message: -1603 Fatal Error During installation. consult Windows Installer Help(Msi.chm) or MSDN for more info. I have tried doing this, but I really don't know much about computers. I'm not really sure if I am tring to remove itunes correctly. I am just so frustrated and hoping that someone out there has a solution to this particular problem.
Any suggestions would be greatly apprectiated!

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Unable to install iTunes to my windows7, saying invalid win32 apllication.

Hi I hope you can help. I am trying to install iTunes to my new laptop which is has windows7. It has a 32-bit operating system, I have tried to load 9.1 and 9.1.1 version including the quicktime with iTunes but I when I click 'run' it comes up saying that the file is not a valid win32 application. I was led to believe that 9.1.1 would support a 32-bit. I have posted same question on microsoft and have tried their suggestions which havent worked. Im hoping someone on here can help me and this new toy is my birthday present which Im yet to enjoy. Thanks Kat

Oooh. that's interesting. I wonder if it's related to the issue with Touch and iPhone restores?
There may be third-party software installed that modifies your default packet size in Windows by inserting a TcpWindowSize entry into your Registry. If your default packet size is set incorrectly it can cause this error. Contact the manufacturer of the software that installed the packet size modification for assistance.
[Update and restore alert messages on iPhone, iPad, and iPod touch|http://support.apple.com/kb/TS1275]
Not sure precisely how that relates to MTU settings. You just taught me everything I know about MTU ...

Unable to install itunes in windows 7 64 bit - hanging

Unable to install itunes in windows 7 64 bit - screen is hanging after first few steps ...
Also i am unable to uninstall Apple update software. Are these both related.
Now how do i get the software installed( itunes installed in windows 7)

Hey gigipramod,
Thanks for the question. I understand you are experiencing issues installing iTunes. The following resource may provide a solution:
Issues installing iTunes or QuickTime for Windows
http://support.apple.com/kb/HT1926
Thanks,
Matt M.

Unable to install iTunes 11.1.4.62 on Windows 8. I get Service "Apple Mobile Device" (Apple Mobile Device failed to start. Verify that you have sufficent privileges to start system services. I am trying to install this on my desktop not a mobile device.

Unable to install iTunes 11.1.4.62 on windows 8. I get
Service "Apple mobile Device) failed to start.
Verify that you have sufficient privileges to start system services.
I am trying to install it on my desktop. I am also in Administrator mode. My iTunes stopped working when I was notified that there was a new version of iTunes and would I like to download it. I said yes as always and it was unable to finish the update because of a
runtime Error!
Program: C:\program Files (x86)\iTunes\iTunes.exe
R6034
An application has made an attempt to load the C runtime library incorrectly.
Please contace the application's suport team for more information.
My iTunes stopped working at this time. I thought I could delete iTunes and start over. This tactic did not work.
Can anyone make sense of what I am saying and help me to get my iTunes back again?

Try a more recent version of my advice. The "for older video cards version" may work when the default version doesn't.
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 are also links to backup and recovery advice should it be needed.
tt2

Unable to install itunes 10.4.1 on my dell laptop windows 7 64 bit

Hello
I am unable to install itunes 10.4.1 on my dell laptop windows 7 64 bit:
i have tried to install itunes on my windows 7 64 bit dell laptop, and everytime it says installation successfully installed, but i can't find the files anywhere in the computer, i searched all the locations, desktop ... but nothing found.
Troubleshooting Done:
- Tried different itunes versions; didnt work.
- Tried to install on different locations on my computer.. C:, D:... didnt work.
- I empty Temp files from all users on my computers who are (Me & Admin) only; didnt work.
- i removed all related apple files; same.
- Uninstall all apple related support ... etc..; didnt work.
- I have Admin access to all my files and also tried to install from Admin account; didnt work.
I don't know what else i can do, please advise me on how to fix it, i need to backup my iphone & ipad ASAP.
Please contact me via email, phone anytime and as soon as you can.
Thanks for your support
Ashraf Badi
<Personal Information Edited by Host>

Hi Nitro,
Tried your advise but that too failed. Problem still continues. Again that same error "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".
Please advise.

Unable to install iTunes after converting from Windows Vista to Windows 7. Am told installation was successful, then "iTunes was not installed correctly", followed by "Error 7 (Windows error 193).

Unable to install iTunes after converting from Windows Vista to Windows 7. Am told installation was successful, then "iTunes was not installed correctly", followed by "Error 7 (Windows error 193). I have my iPod plugged into my computer via USB port. What am I doing wrong?

i have the only account on my laptop so have checked and am the account administrator
i run windows 7 home premium
I have the same problem and
have followed the link uninstalling in the correct order,
then restarted as per instructions,
went to Apple to download itunes,
hit download now,
Visit the iTunes download page. Click Download Now to download the iTunes installer. When prompted, click Save (instead of Run).
did not get a save instead of run prompt
Right click on iTunesSetup or iTunes64Setup (the installer you downloaded in step 3).
If you have Windows Vista, Windows 7, and Windows 8: Choose "Run as administrator."
i can only click run as administrator from right clicking the shortcut on my desktop screen
If iTunes fails to install or repair, it might be necessary to remove components left from a previous installation of iTunes and then reinstall.
sick of doing this
at least 7 or 8 times i have re installed itunes to no avail
troubleshooting no better
please help. pulling my hair out at this stage
it was working fine until 2 days ago when i opened itunes it offered to update to 12.1
not working since i clicked yes
also i have gone to restore previous point and ffs there are no restore points before my multiple reinstalls
really dont want to have to restore factory settings

Unable to install Itunes 10.1 or 10.1.1 -Apple Mobile Device USB Driver

Unable to install Itunes 10.1 or 10.1.1 and have it sucesfully install the Apple Mobile Device USB Driver. It keeps coming up with an error that the driver is unsigned or disappears completely from device manager.
I have tried full uninstall including cleaning registry keys and file system. If I uninstall and re-install 9.2.1 usb driver works perfectly and I have no issues synching with phone or seeing the phone in Itunes.
I have tried repair installs, updating the drivers by pointing to C:\Program Files\Common Files\Apple\Mobile Device Support\Drivers
I have tried removing all USB devices and having them reinstall from Windows after a reboot. Nothing seems to work.
I just got a new IPAD and cannot use it because I cannot install 10.1 at least to have it connect. It came with IOS 4.2.1 on it.

I also encountered the same problem.
and yes, I uninstalled and reinstalled itunes 10.1.1 bla bla blahhh....
Same issue!!! itunes cannot open cuz the mobile device support not started etc..
but when reinstalled prior itunes version 9.2 its gone
and issue fixed.
i can sync my 3G.
but not my 4G. it says you need to upgrade to 10.1 or above
spending the whole night to fix the problem which never occured b4
i finally find out one thing.
pl keep in mind im not a computer exprt
i tried this and it worked, i don know what fixed it, bt it works
try this at your own risk. some comp genius will tell us weather this way is right or not.
ok. lets start...
in your desktop make a new folder. name it Kmh_\CoreFP
try uninstalling the newer version 10.1
only the itunes not other mobile div suprt, application suprt etc.
dont mind the following order:http://support.apple.com/kb/HT1923
and reinstall itunes 9.2
go to C:\Program Files\Common Files\Apple
you wil find a folder named "CoreFP"
copy it and paste to Kmh_\CoreFP
uninstall itunes 9.2
and reinstall itunes 10.1 again
go to C:\Program Files\Common Files\Apple
you wil find folder named "CoreFP"
find the difference in properties comparing the one u stored in Kmh_\CoreFP
ok delete it and replace it with the one we stored stored in Kmh_\CoreFP
restart the computer and start itunes now
what happens?
best of luck.
-Kmhm63
reinstall the newer version 10.1
I would suggest that you revert back to prior working version until Apple comes out with an update that fixes what 10.1.1 broke.

Unable to install itunes 10,5.I receive this message: there is a problem with this window installer package. A program required for nthis install to complete could not run. Contact your support personnel or package vendor.Am using window ultimate 64 bits

I am unable to install itunes 10,5. I receive this message: There is a problem with this window installer package. A program required for this install to complete could not run. Contact your support personnel or package vendor. I am using window 7 ultimate 64 bits

There is a problem with the Window installer package. A program required for this intall to complete could not be run. Contact your support personnel or package venfor.
Perhaps let's first try updating your Apple Software Update.
Launch Apple Software Update ("Start > All Programs > Apple Software Update"). Does it launch and offer you a newer version of Apple Software Update? If so, choose to install just that update to Apple Software Update. (Deselect any other software offered at the same time.)
If the ASU update goes through okay, try another iTunes install. Does it go through without the errors this time?

I am still unable to install itunes in Windows Vista

I have tried to run Fix it 4 times now after doing other things suggested in the Apple community and I am still unable to install itunes. Do you have any other ideas?
I've been uninstalling/reinstalling and using CCcleaner, sfcscannow and nothing seems to correct error msg 2- corrupt files found/unable to fix. Now what??????
I am using windows Vista. I NEED help!

nothing seems to correct error msg 2
With the Error 2, let's try a standalone Apple Application Support install. It still might not install, but fingers crossed any error messages will give us a better idea of the underlying cause of the issue.
Download and save a copy of the iTunesSetup.exe (or iTunes64setup.exe) installer file to your hard drive:
http://www.apple.com/itunes/download/
Download and install the free trial version of WinRAR:
http://www.rarlab.com/download.htm
Right-click the iTunesSetup.exe (or iTunes64Setup.exe), and select "Extract to iTunesSetup" (or "Extract to iTunes64Setup"). WinRAR will expand the contents of the file into a folder called "iTunesSetup" (or "iTunes64Setup").
Go into the folder and doubleclick the AppleApplicationSupport.msi to do a standalone AAS install.
Does it install properly for you?
If instead you get an error message during the install, let us know what it says. (Precise text, please.)

I am unable to install Itunes on Windows 7 as I am getting the message "an error occured during the installation of assembly "Microsoft VC80.CRT Type ="win32" version="8.0.50727.6195",public key token 1fc8b 3b 9a 1e 18e 3b",processorArchitecture="x86".Ple

I am unable to install Itunes on Windows 7 as I am getting the message "an error occured during the installation of assembly "Microsoft VC80.CRT Type ="win32" version="8.0.50727.6195”,public key token 1fc8b 3b 9a 1e 18e 3b”,processorArchitecture=”x86”.Please refer to Help and Support for more information:"HResult 0x800736FD

I found htis other post https://discussions.apple.com/thread/3401328?start=0&tstart=0
I also found this in another post
These ones are typically caused by underlying problems on the PC that also often cause Windows Updates to fail to install. If we can fix the Windows Update trouble, we can usually get the iTunes trouble cleaned up en passant.
Go into your Windows update and try to check for new updates. If updates install, stock up on the ones you're behind on, restarting the PC if requested to do so. After the restart, try installing iTunes again. Does it go through this time for you?
If windows updates fail to install, go into your Update History and doubleclick the failures. What alphanumeric codes appear for you? (For example, 8007000B.)

I am unable to install Itunes on Windows 7 as I am getting the message "an error occured during the installation of assembly "Microsoft VC80.CRT Type ="win32" version="8.0.50727.4053,public key token....."HResult 0X8007054f

I am unable to install Itunes on Windows 7 as I am getting the message "an error occured during the installation of assembly "Microsoft VC80.CRT Type ="win32" version="8.0.50727.4053,public key token....."HResult 0X8007054f

I found htis other post https://discussions.apple.com/thread/3401328?start=0&tstart=0
I also found this in another post
These ones are typically caused by underlying problems on the PC that also often cause Windows Updates to fail to install. If we can fix the Windows Update trouble, we can usually get the iTunes trouble cleaned up en passant.
Go into your Windows update and try to check for new updates. If updates install, stock up on the ones you're behind on, restarting the PC if requested to do so. After the restart, try installing iTunes again. Does it go through this time for you?
If windows updates fail to install, go into your Update History and doubleclick the failures. What alphanumeric codes appear for you? (For example, 8007000B.)

Unable to install iTunes 8

I am also unable to install iTunes 8. I am not getting the same error messages as others however - just a msg telling me that there were problems installing iTunes 8 & if they persist I should try clicking - TOOLS - DOWNLOAD ONLY.
I have done this I ended up with an open folder on my desktop containing several files Including bonjour which I had deselected.
I now have several questions
a)what do I now do with these files ?
b) where do I find them again - they were in a folder called apple update but having closed the folder I am now unable to find it anywhere
c) having read through the forums & seen all the problems other users are having with this software do I really even want to update. What do I need iTunes 8 for - & what happens if I don't install it ??
Obviously I am not the most tech savvy of posters here & I would really appreciate some feedback
Thanks - Gillian

This is the error I get when I instll.
"The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2738."
-SR

Have a/c with itunes but unable to install itunes on Windows 7

Though I have an a/c with itunes I am unable to install itunes keep receiving errors when trying to install

Neither Apple nor the iTunes installer cares if you have an a/c (I'm assuming that's the lazy way of typing account) when installing iTunes.
If you want/need help, stop trying to be cute, provide the specific details without the short hand.
Otherwise... search for the errors that are being displayed.
Others are more likely to help if you actually put some effort into asking for help.

I am unable to install itunes for windows 7

I am unable to install itunes for windows 7.I want to import audio material to my iphon4s from my lap top

rashin wrote:
I am unable to install itunes for windows 7
Why not? Should we guess at the issue or do you plan to provide details so that others can offer suggestions/solutions?

Unable to install ituns on windows 7 64 missing .dll file

Unable to install ituns on windows 7 64. Installer states missing .dll file.

Here is a solution that worked for a user who also had a problem with iTunes Software Support. This thread was for a win32 version, but Maybe this is the problem for both of you?:
IT appears that AppleApplicationSupport.msi, is not opening and installing properly.
Download and SAVE iTunesSetup.exe, where you can find it.
Then:
1. Download and install WinRAR.
2. Right-click the iTunesSetup.exe icon and choose "Open with WinRAR".
3. Once the EXE is opened in WinRAR, double-click AppleApplicationSupport.msi and when the installer window is open choose "Repair".
4. Done! You can now run iTunes normally.
Here is a link to that fairly lengthy thread.. http://discussions.info.apple.com/thread.jspa?threadID=2151777&tstart=-1

Unable to install itunes 7.5 becasue of invalid signature

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