I am getting the following error message - the itunes application could not be opened - an unknown error occurred (-50). Help!? It won't even open up.

I reinstalled iTunes because it stopped opening up and now I'm getting this error message when it refuses to to open. Help?

If you right-click iTunes and Show in Finder, is it located in the Applications folder?
Try trashing the iTunes plist files from ~/Library/Preferences/ and relaunch iTunes (all of the fies that have com.apple.iTunes in the name).
If that doesn't work, try following Apple's document -> Removing iTunes for Mac OS X.
WTH.

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I am trying to open my iTunes on a Windows XP laptop and get the error message 42404 "iTunes application could not be opened. Please repair or reinstall QuickTime". I did that and it did not help. Any ideas?

I am trying to open my iTunes on a Windows XP laptop and get the error message 42404 "iTunes application could not be opened. Please repair or reinstall QuickTime". I did that and it did not help. Any ideas?

Let's see if a more rigorous uninstall/reinstall procedure gets us past that, nancy. See the following troubleshooting document:
Removing and Reinstalling iTunes, QuickTime, and other software components for Windows XP

HT1414 I have done the first 3 steps but before I can get onto the 4th step a error message comes up Iphone could not be restored, an unknown error occured (1015), the iphone is a 3rd Generation Iphone 3G.

I was using my Iphone 3G and I tunes told me I needed to upgrade my Itunes, after completing this the said I need to upgrade my I phone and it just blanked off while upgrading. I tried to restore it, I get throught the first 3 steps but then a message comes up and Iphone cannot be restored, unknown error has occured (1015) Please help me ??????????????

Error 1015: This error is typically caused by attempts to downgrade the iPhone, iPad, or iPod touch's software. This can occur when you attempt to restore using an older .ipsw file. Downgrading to a previous version is not supported. To resolve this issue, attempt to restore with the latest iPhone, iPad, or iPod touch software available from Apple. This error can also occur when an unauthorized modification of the iOS has occurred and you are now trying to restore to an authorized, default state.
From Apple support page > http://support.apple.com/kb/TS3694#error3194
We cannot help you with a jailbroken device. You will have to look elsewhere.

TS3694 i forgot the password of my iphone 3g and when i try to restore it it shows the message"my iphone 3g could not be restored an unknown error occurred(1015)" can any body help please..

i forgot the password of my iphone 3g and when i try to restore it it shows the message"my iphone 3g could not be restored an unknown error occurred(1015)" can any body help please..

This error normally appears if you attempted to downgrade or modify your iOS. See here http://support.apple.com/kb/TS3694#error1015

When I try to activate my home sharing on iTune I get this error message."home sharing could not be activated because an error occurred(-2146762487)" .How can I solve this problem?

When I try to activate my home sharing on iTune I get this error message."home sharing could not be activated because an error occurred(-2146762487)" .How can I solve this problem?

I have a brand new iMac with all the newest updates etc etc, Safari logs me in without any problem but iTunes etc is just not working.. and I have the same message...Any ideas how to resolve this?
"Home Sharing could not be activated because an error occurred (5506)."

When downloading itunes onto my windows 7 pc I get the following error message "this installation package could not be opened verify that the package exists and that you can access it"

I am having trouble downloading Itune, icloud etc onto my Windows 7 PC and keep getting the following error message "this installation pack could not be opened, verify that the package exists and that you can access it"

tried downloading the quicktime installer, I get the same message with it too

I can't Start, Uninstall or Install new iTunes. I'm getting the same error message: Window Installer Service could not be accessed. No other programs have similar problem. Any suggestion what can be done?

I can't Start, Uninstall of Install new iTunes. I'm getting the same error message: "Window Installer Service could not be accessed". No other programs having similar problem. Any suggestions how to fix it?

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) (not for XP) 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

I'm having trouble with my Ipod- I tried to restore it but keep getting a message - the ipod could not be restored. an unknown error occurred(1413)

I'm having trouble with my Ipod- I tried to restore it but keep getting a message - the ipod could not be restored. an unknown error occurred(1413)
Mt computer has been freezing up on me lately and I think it messed up my Ipod when it quit right in the middle of downloading and got shut off.

That's because you jailbroke your phone. You can't get help here.

I am having trouble dating to version 3.6.14. I am running Linux/Ubutu OS and I get this error message:/tmp/p7x3vko2.part could not be saved, because the source file could not be read. Please help. Thank you , Deb

I am having trouble dating to version 3.6.14 or updating to the Beta testing. I am running Linux/Ubutu OS and I get this error message:/tmp/p7x3vko2.part could not be saved, because the source file could not be read. Please help. Thank you , Deb

Solved for me.
I set the owner/permissions of my profile's mozilla folder's (and all the files in it) to read/write access, and the problem disappeared.
in linux:''
* cd /home/myusername/.mozilla
* chown -cR myusername:mygroup ./
* chmod -cR +rw ./
'''Never do that with root privs (nor with sudo)'''

I cannot download OS X Mountain Lion, I get an error message that says: "We could not complete your purchase. The product distribution file could not be verified. It may be damaged or was not signed." Why am I receiving this message?

I cannot download OS X Mountain Lion, I get an error message that says: "We could not complete your purchase. The product distribution file could not be verified. It may be damaged or was not signed." Why am I receiving this message?

Servers may be overloaded.
One user reported:
Deleted file com.apple.appstore in /var/folders/, dissabled VirusBarrier X6: problem solved!

Iphone 3gs shows activation required, hocked up to iTunes and it is not recognized. Did the restore but just gets to the end and gives an error message it could not be restored, an unknown error occurred (-1). Can someone assist me in next steps please?

iphone 3gs shows activation required, hooked up to iTunes and it is not recognized. Did the restore but just gets to the end and gives an error message it could not be restored, an unknown error occurred (-1). Can someone assist me in next steps please?

Instructions to get the phone back working temporary.. till there is a real fix.
1. turn off the phone
2. fire up iTunes
3. press and hold the home button, plug in the cable, hold till you get to see the recovery mode
4. iTunes will the allow to choose restore the phone back to 5.0.1 ( no other choice)
5. iTunes will then ask you to choose which previous backup to would like to recover.
(note: please do not reboot your phone unless necessary, i realize at times after reboot, it goes back to sq1)

I can't open my itunes application, keep getting message - the itunes application could not be opened, an unexpected error occurred (13010) Please help

I can't open my itunes application, keep getting message - the itunes application could not be opened, an unexpected error occurred (13010) Please help

Try removing the Genius database. In the "Finder" go to the /username/Music/iTunes/ folder and delete the "iTunes Library Genius.itdb" file. This may allow the program to launch again. This file will be recreated upon first use of the "Genius" feature.

HT201210 i keep getting this message when trying to update my old 3g-"the iphone could not be restored-an unknown error occurred (-1)-any ideas? anyone?

i keep getting this message when trying to update my old 3g-"the iphone could not be restored-an unknown error occurred (-1)-any ideas? anyone?

i have done that
same result
the phone has a sim in it that is not active. does this cause the fault in question?

HT2731 What do you do when you get the message could not sign in an unknown error has occurred

What do you do when you get the message could not sign in an unknown error has occurred when it ask for your password while trying to download apps?

In settings I signed out of my iTunes account, then signed back in.
It’s now working for me… Hope this helps.

HT201210 hi,am trying to restore my ipod but i am getting this message each time:the ipod could not be restored-an unknown error occured,what should i do?

hi,am trying to restore my ipod but i am getting this message each time:the ipod could not be restored-an unknown error occured,what should i do?

Was the complete wording of the error message? Usually an error number or other information is also provided

I have an apple 3g, tried to update it to 4.2, but it wasnt successful, then they asked me to restore it .. to which im getting an error message of "the iphone could not be restored an unknown error has occured (error 1015), any solutions?

i have an apple 3g, tried to upgrade it to a 4.2 version, (previously it was 4.1). it wasnt successful, the computer asked us to restore it to the version which was last operational, and while restoring an error message appeared "the iphone could not be restored, an unknown error occured

"This error is caused by attempts to downgrade the iPhone, iPad, or iPod touch's software. This can occur when you attempt to restore using an older .ipsw file. Downgrading to a previous version is not supported. To resolve this issue, attempt to restore with the latest iPhone, iPad, or iPod touch software available from Apple."
Taken directly from this article http://support.apple.com/kb/TS1275.
Plug your iPhone into iTunes and update it to the latest supported version, which is 4.2.1.
- Greg

I am getting the following error message - the itunes application could not be opened - an unknown error occurred (-50). Help!? It won't even open up.

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