iTunes freezes after upgrading to Windows 7 SP1 German

I have the same issue. Tried everything - no luck. Proplem starts after sp1 install.

So four months since this problem was reported and no word from Apple! I've had to uninstall SP1 just so iTunes will work. I have emailed Apple and had no response. Very poor.

Looks like I found another bizarre workaround. iTunes syncing seems to work when I disable both the "core multi-processing" AND the "hyper-threading" CPU options in the BIOS. Since the system is barely usable with these settings, this is not a useful workaround, but it gives a hint where the problem is...

Has anyone tried iTunes 10.4 yet with Win7 64 bit SP1? If so, is there any improvement for us Windows vs. iTunes sufferers?

hey donquay,

good to hear i'm not the only forgotten sufferer! but sorry, no luck. tried 10.4 immediately when it was out. first it seemed to be more reliable, but then again sync errors...

cheers.

I"m still having sync errors with Windows 7 64 bit SP1 and itunes 10.4. I'm at my wits end and hope they come out with a solution soon. I saw in a previous post someone commented on rolling back to a previous version of itunes to overcome the problem, how do i do that? on the apple site it only gives 10.4 as the available download?

Since I haven't seen it posted here and since it worked for me, it could be a firewall issue. Specifically, Zone Alarm had a known issue that causes these problems. Uninstall Zone Alarm, and your issues may be fixed. Here are a couple links to look at:

From Zone Alarm:

http://forums.zonealarm.com/showthread.php?t=77045

Another Apple Support string:

https://discussions.apple.com/thread/2768750?start=0&tstart=0

Supposedly the latest version of Zone Alarm fixes the problem, but I haven't been daring enough to try it out yet. What a headache.

iTunes 10.4.1 'almost' fixed the problem! It works much better than previous versions. It sometimes still hangs during sync for a short amount of time, but then continues (when it used to fail). Feels like it is retrying on error. It worked astonishingly long and was 'almost' able to sync the entire library or even do a restore... - but in the end it still failed with the same old sync error.

I think 10.4.1 has completely fixed the problem! After upgrading to 10.4.1 and turning off the compatibility mode workaround, I haven't had a single freeze in dozens of sync operations over the last month or so.

Let's hope 10.5 doesn't re-break it!

Just for completeness, I'm using 10.4.1.10 on Windows 7 64-bit.

Still working great in iTunes 10.5 too. Yay!

Yes, iTunes 10.5 finally seems to work for me too! Hallelujah...

Bad news. Installing iOS 5.0.1 (wired) via iTunes 10.5 again failed (an unknown error occurred)! But syncing and restoring from backup does work. Looks like part of the relevant fixes are implemented in the iOS itself (not only in iTunes). So everything works fine when current iOS is running, but the problems remain when loading new firmware (recovery mode)...

Some Win7 64 SP1 problems still exist! During my last iTunes/iPhone backup Windows crashed (automatic reboot) when the backup tried to transfer the purchases. That seems to be still a driver problem.

Not only the backup session failed (crash), unfortunately there are two much worse problems which are unrelated and probably could be fixed easily:

1) After the crash the iPhone was corrupted! All computers (also Macs) said "iTunes cannot read the contents of your iPhone. Please go to ... and restore." It's really a shame that the backup/sync process is obviously not transactional and can result in a corrupted iPhone!

2) After I restored the firmware, I tried to restore the backup. iTunes said "Estimated time remaining...." and then said "iTunes cannot restore the backup XYZ because the backup does not exist"! Meaning that similar to the iPhone, the backup on the PC is also corrupted and unusable! Which could easily be avoided if iTunes copied the backup before starting the process.

I somehow can understand having difficulties dealing with Win7 drivers, but the other two problems are pure logical ones and should be corrected to provide users with reliable software which is suitable for business use.