Could not open key when trying to install Apple Application Support

I can't get the apple application support to install on my coomputer it says "Could not open key: Unkown\coponents\da4bc898f25f5bd0af18c3b3b1a1ee8\0dc8c851b56a0d742add098a4295f0 8a. Verify that you have sufficient access to that key, or contact your support personnel." Can anyone help with this. Thanks

under regedit, checked permissions on this key and "allow" "full control" are checked for the administrative profile that is logged in, so there should be access to that key.
Just doublechecking an exotic possibility. Does your SYSTEM account have full control of the key, too? (Peculiar things can happen when that loses permissions on a key.)

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I am getting the message "The windows installer Service could not be accessed when trying to install Itunes on my new computer, any help would be appreciated.

I am getting the message "The windows installer Service could not be accessed when trying to install Itunes on my new computer, any help would be appreciated.

Hey there Frank0619,
If you have not been able to install iTunes because the Windows Installer service is not available, I would recommend the troubleshooting in the following troubleshooting to help.
Issues installing iTunes for Windows
These in particular:
Make sure you have an administrator account.
To install iTunes, you'll need to log in to your computer with an administrator password. If you're not sure if you have an administrator account, read Windows 7: How do I log on as an administrator? You could also refer to your computer's help system, contact your IT department, or visit support.microsoft.com for assistance.
Install the latest Microsoft Windows updates.
To download the latest updates, visit the Microsoft Windows Update website. iTunes for Windows requires Windows XP, Windows Vista, Windows 7, or Windows 8 with the latest Service Pack installed. If you can’t install the updates, refer to your computer's help system, contact your IT department, or visit support.microsoft.com for assistance.
Download the latest version of iTunes.
The latest version of iTunes can be downloaded at http://www.apple.com/itunes/download/.
Disable conflicting software.
Some Windows background processes can cause issues for other programs and processes. These conflicts can prevent applications, such as iTunes, from installing. Disable conflicting processes by starting your computer using MSConfig:
Using Msconfig to troubleshoot conflicts in Windows XP
Using Msconfig to troubleshoot conflicts in Windows Vista, Windows 7, and Windows 8
Some security software made by other companies can't be disabled using MSConfig. If you've installed security software and you're having issues installing iTunes or QuickTime for Windows, you might need to disable or uninstall security software to resolve installation issues.
Restart your computer.
Install iTunes.
Thank you for using Apple Support Communities.
All the best,
Sterling

A problem with this Windows Installer package. A program required for this install to complete could not be run" when trying to install iTunes

I received the above error message when trying to install the newest iTunes. So after some searching I decided that uninstalling/reinstalling iTunes should fix the problem. I was able to uninstall iTunes. But - the Apple software updater that came with the last iTunes update (late summer) won't uninstall. I receive the same message when I try to uninstall the updater. How can I get the updater off my computer so that I can reinstall iTunes?
My computer is a new purchase (May) and runs windows 7 . Thanks for your help!!

Try the following user tip:
"There is a problem with this Windows Installer package ..." error messages when installing iTunes for Windows

Getting error message "the requested item could not be found" when trying to install Firefox on my android.

I had to uninstall Firefox for Android because I was having problems logging in to sync. I got a support e-mail to uninstall and reinstall because the sync issue had been fixed. I uninstalled the Firefox app and then when I tried to reinstall it I get the error message on my phone "the requested item could not be found." HELP!

Some supported phones are not displaying Firefox in the Market for some reason. We're still investigating this. You can check if your phone is supported here:
https://wiki.mozilla.org/Mobile/Platforms/Android
and then download the app directly from here:
http://ftp.mozilla.org/pub/mozilla.org/mobile/releases/4.0b3/android-r7/multi/
(Note: If your phone is from AT&T, you will have to search for instructions on "sideloading" the APK file, since AT&T disables the option to install from non-Market sources.)

Error in installing Apple Application Support preventing installation of iTunes, please help

I am trying to install iTunes for Windows (64 bit) but have been unsuccessful because I receive the following error message: "Microsoft.VC80.CRT,type+"win32",version="8.0.50727.6195"publicKeyToken="1fc8b3 b9a1e18e3b",processorArchitecture="x86". Please refer to Help and Support for more information. HRESULT:0x80070BC9.
After receiving this error message the installation continues, but iTunes is never able to launch because it says that Apple Application Support is not installed. I have tried separately installing Apple Application Support only to receive the same error message as above. Please advise on how I can install iTunes properly or what this error message means.

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 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.
The section Install missing components has advice on breaking down the iTunes installer into the individual .msi files which might prove useful if Apple Application Support won't install normally.
tt2

Please Please help me. I have been trying to install Itunes 11 for 3 months. I deleted my old version and can not for the life of me get Itunes installed . I have Windows 7 Home. The message is " Could not open key: UNKNOWN\Components\DA42BC89BF25F5BDOAF1

Please Please help me. I have been trying to install Itunes 11 for 3 months. I deleted my old version and can not for the life of me get Itunes installed . I have Windows 7 Home. The message is " Could not open key: UNKNOWN\Components\DA42BC89BF25F5BDOAF1

Try the following user tip:
"Could not open key: UNKNOWN\Components\[LongStringOfLettersAndNumbers]\[LongStringOfLettersAndNumbe rs]" error messages when installing iTunes for Windows

ERROR: Could not open Key.. when installing 9.1.0.79 x64

I get the following error box when trying to install iTunes 9.1.0.79 x64 on my Dell Studio laptop with Vista 64-bit:
Could not open Key: UNKNOWN\components\DA42BC89BF25F5BD0AF18C3B9B1A1EE8\7E577B2224C65CF4E801A9E5237 5DB49
I have no idea what this means. It keeps happening and I cannot run iTunes because of it. If anyone knows what to do please tell me I am going crazy.

I FIXED MINE!! This is what I did:
1. Select "Start", "Run", and type "RegEdt32"(for VISTA "regedit"). Click OK.
2. Select HKEYLOCALMACHINE
3. In the menu, select "Edit", "Permissions". A dialog will come up.
4. Check "Allow" for "Read" and for "Full Control", then click OK
5. Expand HKEYLOCALMACHINE and repeat steps 3, 4 for the keys "Software" and "System"
6. Expand the "Software" key, and repeat steps 3, 4 for "Classes"
7. Expand the "Classes" key, and repeat steps 3, 4 for "Installer"
8. If you have made any changes in steps 1 through 7, skip to step 10. If you did not make any changes, continue with step 9.
9.Open the "Classes" key, and click on "Installer" . In the menu, click "Security", "Permissions." Click the button marked "Advanced." Check "Reset Permissions on all child objects.", then click OK
10. Close the registry editor
11. Reboot the computer
then run iTunes install again.

Error message: "Could not open key..." trying to install iTunes 7.6.1.9

I'm trying to install iTunes and keep receiving error msg: "Could not open key: HKEYLOCALMACHINES\Software\Classes\.cdda\OpenWithProgIds. Verify that you have sufficient access to that key, or contact your support personnel."
I have tried to un-install and re-install to no avail. Please help! I have i-Tune gift cards that are rendendered worthless at this point.

Are you logged on as a Windows administrator?

Tried to install ios5. Would not install. Also lost earlier version of itunes. Keep getting message Could not open key

Tried to install the newest version and lost all itunes on this computer. Followed instructions about removing and reinstalling iTunes, Quicktime, etc. Now I get message "Could not open key: UNKNOWN\Components|" and several letters/numbers afterward.

The first thing would be to get the proper version of Safari for your version of OS X (Tiger).
Go here to get Safari: http://www.apple.com/safari/download/
Be sure to choose the bottom choice:
You will also need the latest security update for Tiger.

Hi, i have problem when installing itune. it said: Could not open key HKEY_LOCAL_MACHINE32\SOFTWARE|Microsoft\Windows\CurrentVersion\Run. Verify that you have sufficient access to that key, or contact your support personnel. please help me!

hi,
i have problem when installing itune. it said:
Could not open key HKEY_LOCAL_MACHINE32\SOFTWARE|Microsoft\Windows\CurrentVersion\Run. Verify that you have sufficient access to that key, or contact your support personnel.
Please help me i can't do anything without itune

For "Could not open key/write value" errors when reinstalling try b noir's user tip:
"Could not open key: UNKNOWN\Components\[LongStringOfLettersAndNumbers]\
[LongStringOfLettersAndNumbers]" error messages when installing iTunes for Windows.
The technique can be applied to the branch of the registry mentioned in the error message.
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.
tt2

I can not update my version of itunes. When I install the message "Could not open key UNKNOW \ Instaler \ Products \ E84E5F4E55179FC488DCF773E79CCA45 \ SourceList \ Media. Make sure you have sufficient access to that key or contact the support team." Any

I can not update my version of itunes. When I install the message "Could not open key UNKNOW \ Instaler \ Products \ E84E5F4E55179FC488DCF773E79CCA45 \ SourceList \ Media. Make sure you have sufficient access to that key or contact the support team." Any tips on how to solve this problem?

If doesn't work try use the instructions below BUT in BOTH folders, first in SourceList and after in the Media.
Start>Run put regedit and press Ok.
1. Go to the key: HKEY_CLASSES_ROOT\Installer\Products\9B00314CD581E574FBCE93FE37F2911B\SourceLis t\Media
2. Right click in Media folder, select Permissions from the menu.
3. You will see that is no user, on the "Permissions for..." dialog box which appears next, press the "Add.." button and add in the "All"
4. Back on the first "Permissions for..." dialog box, click on each account in the top-list and make sure each has the "Full Control = Allow" and "Read = Allow" permissions
5. Click the "Advanced" button and the "Advanced Security Settings" dialog box appears
6. On the "Permissions tab" enable the checkmark box named "Replace all child object permissions with inheritable permissions from this object", then press the "Apply" button
7. On the "Owner" tab, highlight the "Administrators" name in the lower listbox, enable the checkmark box called "Replace owner on subcontainers and objects" and press the "Apply Button"

Win 8.1 Pro, iTunes install fails with "could not open key"

Have tried complete uninstall as required by "Remove and reinstall" Did not work.

Okay ... although you've got a Windows 8 (rather than a 7 or a Vista), let's try the following user tip:
"Could not open key: UNKNOWN\Components\[LongStringOfLettersAndNumbers]\[LongStringOfLettersAndNumbe rs]" error messages when installing iTunes for Windows

I am trying to download iTunes on to my laptap but I keep getting a "Could not open key: UNKNOWN\Components\ with a bunch of numbers and letters following. I have uninstalled all the iTunes programs. I changed the Regedit but I still get the error?

I am trying to download iTunes to my laptop but I keep getting this "Could not open key: UNKNOWN\Components\ followed by a bunch of numbers and letters. I have unistalled iTunes and all the other apple componants. I also used followed this http://discussions.apple.com/docs/DOC-3581. But I am still getting the same "Could not open key:" error and it tells me that iTunes could not download.

On occasion, when changing ownership or permissions has no effect on the UNKNOWN\Components\ error, the fixit from the following Microsoft document sometimes works:
Fix problems with programs that can't be installed or uninstalled

Hi i can not install itune. There are the error show " Could not open key: Unknown\Components\32A7D634EB632D11CABB00087CCFBB48\DAEC106DF4E2BBB458CC2CA9C46 E3A0C.

Hi,
i can not install itune. There are the error show
" Could not open key: Unknown\Components\32A7D634EB632D11CABB00087CCFBB48\DAEC106DF4E2BBB458CC2CA9C46 E3A0C. Verify that you have sufficient access to that key. or contact your support personal.
I have tried some soution from the similar case to uninstall itune and also related components already but finally the probelm still occured.
Please you help to suggest me what can i do? I need to restore my back up data to the new iphone as the previous one got stolen.
BR,
Sirorath A.

Try the following user tip:
"Could not open key: UNKNOWN\Components\[LongStringOfLettersAndNumbers]\[LongStringOfLettersAndNumbe rs]" error messages when installing iTunes for Windows

Error: -3, tried registry "classes" fix, now get 1402 Could not open key

I tried to upgrade itunes and I get an error when quicktime installs. The error is: Error: -3, followed by itunes cannot run because some of its required files are missing. I followed the registry "classes" permission fix and tried to install a stand alone version of quicktime. I then get a 1402 error Could not open key
hkeylocalmachine\software\microsoft\windows\currentversion\uninstall\quicktime. I checked the registry and indeed that key is missing. I am unable to add the key, but I thought I could try the same "classes" permission trick but I get a security error "unable to save permission changes on quicktime", "access is denied". I am logged on as administrator but I cannot save these changes. Any suggestions?
Windows XP

I tried to upgrade itunes and I get an error when quicktime installs. The error is: Error: -3, followed by itunes cannot run because some of its required files are missing. I followed the registry "classes" permission fix and tried to install a stand alone version of quicktime. I then get a 1402 error Could not open key
hkeylocalmachine\software\microsoft\windows\currentversion\uninstall\quicktime. I checked the registry and indeed that key is missing. I am unable to add the key, but I thought I could try the same "classes" permission trick but I get a security error "unable to save permission changes on quicktime", "access is denied". I am logged on as administrator but I cannot save these changes. Any suggestions?
Windows XP

Could not open key when trying to install Apple Application Support

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