Could not open key HKEY_LOCAL_MACHINE\Software\Classes\Quicktime.Quicktime\

You would need to right click on the QT registry key and select permissions and give permission to get it to respond.

This may seem like a dumb question, but where is the registry key?

I just started getting this error message when my sister tried to download the new version of iTunes.

No it is permissions in the registry, you tell me how and what you are doing in there, and how you are going about it. I delete programs all the time in the registry, what do you think, I'm taking a wild guess here

hey jacumba, I've got the same problem. My issue (I think) is that the \CLSID subfolder doesn't exist. I've tried exporting the QuickTimePlayerlib.QuickTimePlayerApp\CLSID from another machine and importing onto this machine, but the system won't allow that either.

Any ideas here?

I'm having the same problem.... but need step by step directions.... Can anyone help?

Thanks...

I am having this same problem and it is driving me crazy.
Any help would be Appreciated

I finally called Apple. Basically.... delete Itunes, Ipod, Qucktime and reinstall all over again.

If you want step by step instructions.... provide your email address and I'll foward what Apple sent me.

I didn't want to have to delete everything, but after trying to figure it out for two days..... I was going crazy, too.

I am having a similar problem with a different key. HKEY localMACHINE\SOFTWARE\CLASSES\QUICKTIMEPLAYERLIB.QUICKTIMEPLAYERAPP\clsid. I tried all the suggestions in the article provided by apple, icluding removing all itunes, ipod, and quicktime files and downloading. i didn't work . I still am getting the message that it could not open the key. apple won't help because my warranty expired.
what should I do next? Thanks

hppavilliona814x Windows XP

What I would do is go to registry key and try deleting it. If it does not delete, right click on it and choose permissions. Permissions need to be allowed for at least Administrator and System. If the key does not delete, move on to the next one that is asscociated with QuickTime and delete it, and go on deleting all the keys that are QuickTime related. The one that would not delete may delete after deleting the others.

Let me try to explain this the best I can. I am not a expert in the registry, but know enough to get in and out deleting a programs keys without having the computer become completely unfunctional. There are also books on it.

For example when I delete a program I also go into the registry and remove it, just something I do. Because after removing a program thru the add\remove program control panel and start>search>for all files and folders, there are still registry entrees.

When I start deleting keys in the registry from a program I'll normally run into one that won't delete, even after giving it permissions. So I'll by pass it and go on to the next key, related to the program. The one that wouldn't delete will come up again and end up deleting. So I seem to think that some of the keys inter-react with one another. Because the one that initially wouldn't delete now does after deleting the others, and sometimes giving permissions again.

If you want to delete all keys asscociated with a program. You can go to the Edit menu in the registry, choose Find, type in the name of the program and hit the Enter key on the keyboard. When the key shows up hit Delete on the keyboard. To get to the next key associated with the program, hit the F3 key on the keyboard and the next one will appear. This can get confusing because a registry entree can show up as a series of numbers, so your counting on the registry editor that, that key is asscociated with the program. As long as you are deleting keys that are associated with a program you are OK, if you delete something in the registry that you are not sure of, that is where you'll get in trouble.

You should try going to the path giving here to the registry. HKEY LOCALMACHINE SoftwareClasses and try deleting those keys that are QuickTime and see if it resolves the problem.

where is teh key located?

my e-mail is slupo93@ol.com i am having the same problem for tobeasaint or any one else who can give more info

Thanks for your advice. I have tried unistalling everything but it still hasnt worked. My email address is darrelhunter@blueyonder.co.uk

Everyone, Jacumba has the problem identified and it worked for me!! The issue is with the permissions in the registry key that is indicated in the error message. Go to Start, Run and type in "regedit". You'll see the path that is identified in the error message. Right click on the folder and select permissions. Click on each user identified and select the "full control" box and then hit the apply button. Repeat the process for each user identified in the registry key.

If you still get the error message, you'll need to make sure you have the right group or user names selected. First look at which users are selected in surrounding registries (i.e. non quicktime registries) in order to properly select the users that you need to set the permissions and make a note of which ones are selected. You'll then need to go back to the registry key that's causing the problem, right click and select "permissions". From there, delete all users shown and then hit the "advanced" button. Under the permissions tab, you'll want to select "add". From that menu, select "advanced" again then select "find now". You'll get a list of all users registered on your machine. Select the ones that you noted were set in other registries. Add each one of those and go through the steps to allow "full control". Don't forget to "apply" the setting.

You may get a couple of similar error messages on the install with different registry extensions. If so, repeat the above steps.

Really frustrating that the techies at Apple don't have this one figured out and as a main "FAQ". Spread the word, there is a remedy. I'm really enjoying the new IPod.