Itunes 10.5.1 Completly not working in Win7 (64bit)

I'm having the same experience. Within 10-60 seconds of starting up, I get the message "iTunes has stopped working. A problem caused the program to stop working correctly. Windows will cloes the program and notify you if a solution is available." This is also a Win7 x64 clean system. Worked great until this last upgrade.

Error logs for all the crashes look the same, referencing MSVCR80.dll and code 0xc0000005.

This started happening before I upgraded to 10.5.1. I'd made no changes to my computer in the last month but all of a sudden iTunes is crashing in the last few days. Upgrading to 10.5.1 did not help. I performed several different system restores on my computer, going as far back as 2 months, and attempted 10.5 and 10.5.1 at each point. Before each installation of iTunes, at each restore point, I uninstalled all Apple software, cleaned the registry, and rebooted. Same error every time. iTunes crashes ("iTunes has stopped working") within 60 sec of opening and leaves no useable details in event viewer. I don't think this is a Windows problem. Maybe the initial handshakes between iTunes and Apple servers are causing this. I hope more people are experiencing the same issues and Apple is forced to look into it.

I'm having exactly the same problem on two different machines. HOWEVER, I think it MUST be on Apple's end. One machine I downloaded and updated as iTunes suggested. After spending a few hours trying to figure out why it was crashing, I launched iTunes on my second computer but did NOT update.

They are both crashing after about 30-60 seconds.

One is Win7 64bit, 8gb ram, nice machine- yada yada yada

The second machine is Vista 6gb ram, decent machine and literally all it does it run a powerpoint presentation and itunes. period.

I found a solution! My iTunes is one of the pinned programs in the start menu. I just right click and Run as Administrator and it works!

By the way, I'm running Win 64-bit as well. I'm at version 10.5.1 and it keeps crashing all day long. But now, it's solved.

I posted this earlier, but just in case....

I have two computers, one is Win7 64bit Home Premium on which iTunes was updated to 10.5.1.

The other computer is vista 32bit Home Premium on which I did NOT update iTunes.

Both crash after approx. 30 seconds.

Oddly, as of yesterday, when launching iTunes, the iTunes store is chosen by default upon initial launch. I see the progress bar hiccup while loading.

Yesterday evening, another interesting discovery on the Vista machine - iTunes wouldn't shut down. A song was playing. I clicked the stop button and music stopped. But File Exit and the X are both innefective. I couldn't even use Task Manager to kill iTunes.

I don't think rebuilding my user profile is a viable solution - particularly since not both machines were updated.

Clearly, this points to the connectivity with the iTunes store and not Windows (either version).

I sure hope Apple gets this fixed because right now, iTunes is completely useless.

I've tried everything from running as administrator to cleaning out my registry and performing a clean install and I still have this problem. Interestingly, one machine is a Windows 7 64-bit system and the other is an XP. Same issue. I've had this issue similarly in previous builds of iTunes; it seemed that it took several updates to the program to get to one that was alright. I'm just being patient, hoping Apple solves the issue. One thing I'm having trouble with is editing file info within a song or video. Can't do it without a crash. Seen it before. Patience eventually won out and a solution came with an iTunes update.

Tried billy_andika's fix of running as administrator... no joy here, still a crash shortly after startup.

Have you checked you window task manager. Press and hold, ctrl,alt,delete, in processes CPU usage. What is it?

Is it 50% or higher, Is AppleMobileDeviceService.exe 49%?

My computer is a work computer and I can't change my user profile.

Just completely uninstalled all Apple software. Reinstalled. Still no joy. iTunes crashes within 30 seconds of launch. This is BS. It is not reasonable to remove/rebuild my user profile. For those of us with a lot of application software, this is not only time consuming, but ultimately nonproductive.

Apples needs to get this fixed. I hope they are monitoring these boards.😠

Same problem here and an additional tidbit. I have another computer running Vista Home Premium 32bit. Did NOT update iTunes and have the exact same problem with one additional one... I can't close iTunes on that computer. The File|Exit menu command doesn't work; the X doesn't work. In fact, iTunes monopolizes the screen and even Task Manager won't come to the front so I can kill the iTunes there.

This is a cluster.

UPDATE: I'm not more convinced than ever that the problem is on Apple's end - not my computers'.

I just used Revo Uninstaller to completely and totally wipe iTunes and anything Apple-related off of my computer. Deep scanned the registry, deleted all program folders, defragged the drive as well as the registry. Emptied trash. etc. Apple was completely removed from my computer.

Reinstalled iTunes, got all the appropriate dialogs/TOU, etc., and installed. Pointed iTunes to my library which is on a USB3 exernal drive velcro'd to my laptop lid (been doing this for years). Everything was great. Successfully used iTunes to rename/renumber songs, change album names which moved files to appropriate folders. Played songs, etc., for about 20 minutes. While a song was playing, noticed I had unwatched/downloaded Podcasts. Clicked "Get All" and iTunes crashed immediately.

I think you meant to write "UPDATE: I'm not more convinced than ever that the problem is on Apple's end - not my computers'."