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"Wanna" ransomware outbreak. Please see this Sophos article sophos.com/kb/126733 for advice on how to protect your organization. Immediate action recommended.
This article details how to troubleshoot an issue where iTunes may fail to download iOS software updates for iPad, iPhone and/or iPod. The error message usually suggests the network connection has timed out. The following sections are covered:
Applies to the following Sophos products and versions Sophos Web Appliance
If Active Directory integration is enabled with the Authenticate all requests against Active Directory option follow the steps below:
iOS software updates require a couple of entries in the Local Site List.
Once that is done, iOS software updates should work.
If they still don't work:
Apple's iOS Updates are usually greater than 800Mb, they are also encrypted and because of this they are unscannable.
In Configuration > Global Policy > Download Options, check all three checkboxes for Downloading handling:
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