itunes not working after re-installing on windows 7

Hello tjy_j,

If I’m understanding you right, iTunes crashes on your PC upon opening it and you’ve already tried uninstalling/reinstalling the software. I also see that this started only after you attempted to update iTunes. I know unexpected issues with software after updating is never a fun experience so I can certainly see why you would reach out for help with this today.

We have put together some awesome steps to help you get iTunes up and running again. Follow each one of the applicable steps in the following support article:

Fix unexpected quits or launch issues in iTunes for Windows

Thanks for using Apple Support Communities.

Have an awesome day!

You said you just reinstalled Windows 7. Did you install SP1 (Service Pack 1) and all other Windows patches? If your Windows 7 happens to be the one without SP1, you'll have to install SP1 + other patches. That will take a while (several hours) to complete.

If CoreAudioToolbox.dll is listed in the problem details when iTunes for Windows stops working - Apple Support

Problem signature:

Problem Event Name: APPCRASH

Application Name: iTunes.exe

Application Version: 12.4.1.6

Application Timestamp: 574f3a58

Fault Module Name: CoreAudioToolbox.dll

Fault Module Version: 7.10.5.0

Fault Module Timestamp: 5719afda

Exception Code: c000001d

Exception Offset: 00000000005f9630

OS Version: 6.1.7600.2.0.0.256.1

Locale ID: 16393

Additional Information 1: 86a5

Additional Information 2: 86a599f99c7c0b061be0ac10bc599c0b

Additional Information 3: 0285

Additional Information 4: 02850250025594d879b54ebb835212e8

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I'd reinforce the advice above to make sure Windows is fully updated with all available patches. Then, for general advice, see Troubleshooting issues with iTunes for Windows updates which you've already mentioned.

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. Since removing the one dll and then trying to repair that component hasn't worked for you I'd recommend the deeper clean.

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 (try the last one that worked for you) or want to try the iTunes for Windows (64-bit - for older video cards) release as a workaround for installation or performance issues, or compatibility with third party software.

Your library and device backups should be unaffected by these steps but there are links to backup and recovery advice should it be needed.

tt2