Q: iTune 12.1 update fail by showing invalid signature

I cannot download iTune 12.1 in both download only and download and install options by using Apple Software Update even I have iTune with valid ID in my computer. The download has never finished, showing invalid signature.

Any good reason and help.

iPad Air Wi-Fi, iOS 8.1.3

Posted on Feb 2, 2015 12:37 AM

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Q: iTune 12.1 update fail by showing invalid signature

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by Brett L,

Brett L Feb 4, 2015 9:11 AM in response to mewinkoko
Community Specialists

Feb 4, 2015 9:11 AM in response to mewinkoko

Hey mewinkoko,

If you are having an issue with installing an update to iTunes for Windows, I would suggest that you troubleshoot using the steps in this article -

If you can't install or update iTunes for Windows - Apple Support

Thanks for using Apple Support Communities.

Happy computing,

Brett L
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Q: iTune 12.1 update fail by showing invalid signature

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