iOS 11 causes ActiveSync and image issues with Windows PCs

By: Costea Lestoc
2 minute read
iOS 11 windows pc issues

Getting major software updates on day one after release is a tempting thing to do and at the moment you might be thrilled about the fact that the latest version of Apple’s mobile operating system is finally available to download on select iPhones, iPads, and iPods after a lot of beta releases. This OS comes with lots of new features, including a new picture format that involves less storage, a new File Manager which integrates third-party cloud storage services and more goodies.

Think twice before installing the latest Apple OS

Even if your first thought is to install it on the spot, you might want to think things through especially if you use your iPhone with a Windows PC or in case you rely on Exchange Active Sync for your email. In these case, there might be some issues you’ll encounter in these cases.

For starters, after installing iOS 11 on an iPhone 7/7 Plus or the latest iPad Pros, they will use the new HEIC image format by default. According to Apple, HEIC allows users to save up to 50% on storage without losses in image quality.

On the other hand, the format isn’t not supported on OneDrive or Windows 10, something that changed with the latest version. Now, in case you’re using the OneDrive iOS app to back your up your iPhone and iPad pics, the latest version automatically converts HEIC pics to JPEG before uploading them to the cloud. This way, your pics will be viewable on any OneDrive client and with the Windows 10 Photos app.

In addition, users have complained about Exchange ActiveSync not working on iOS 11 when running Exchange Server 2016 on Windows Server 2016 because of iOS 11  improperly negotiating a HTTP/2 TLS connection. Fortunately, there’s a workaround for this problem as well which makes sure to disable the HTTP/2 TLS connections.

As you can see, these two problems were fixed, but there’s another one that didn’t.

Another issue you should consider: 32-bit-only apps, including some old Microsoft iOS apps, are not supported in iOS 11. Until an update comes along and iOS 11 supports them, you should think twice before getting the new OS.

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