The upgrade to iOS 11 blocks Microsoft email accounts from sending messages from the default Mail app on iPhone and iPad, it has been reported.
iOS 11 brings a torrent of new features to smartphones and tablets, including a one-handed keyboard, augemnted reality features, a redesigned Control Centre menu, and improvements to the Photos app.
iPad users will also get greatly-improved multi-tasking, with users now able to drop-and-drop text, images, and files, between apps.
Unfortunately, the next-generation mobile operating system appears to cause some issues for Outlook.com, Office 365 and Exchange 2016 email addresses.
While these addresses were compaibtle with previous versions of iOS, this week’s update has caused emails to fail to send.
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Users trying to send an email from their Microsoft email account within Mail are presented with the message, “Cannot Send Mail. The message was rejected by the server.”
iOS 11 users flooded social media with complaints about the issue.
Microsoft confirmed the version of Apple’s Mail app that ships in iOS 11 isn’t currently compatible with Windows servers.
Both Apple and Microsoft have confirmed they are aware of the problem. Apple has updated its support page to reflect the problems some users are having with iOS 11.
The update reads: “Apple is working closely with Microsoft to resolve the issue and will release a fix soon in an upcoming software update.”
If you are completely reliant on your Outlook.com, Office 365 or Exchange 2016 email account – it might be worth holding off on the latest iOS update for now.
Otherwise, Microsoft recommends downloading its own Outlook email client – which is compatible with iOS 11 – from the App Store to send and recieve emails.
Frustratingly, this isn’t the only issue the jump to iOS 11 could present to Microsoft fans.
Apple has gone all-in on a new image container named High Efficiency Image File Format, abbreviated to HEIC, on iOS 11.
This new default format is designed to compress your photos to save space on your iPhone, iPad and iPod Touch.
That’s likely to be an incredibly popular decision with anyone who own an Apple device with limited onboard storage (and who doesn’t fancy coughing-up for iCloud storage each month).
HEIC was developed by the team behind MPEG – a hugely-popular audio and video compression standard.
However, since HEIC is still a relatively new format, iOS users may stumble into a few compatibility issues along the way.
Thankfully, Apple will handle the majority of these behind-the-scenes without users every realising.
iOS 11 will share HEIC images as JPEGs when posting to Twitter and Facebook – so no compatibility issues there.
Likewise, if you plug your new iPhone into a Mac or PC to transfer images and other files across.
However, iOS 11 users could face some issues when moving photographs between their smartphone or tablet and Windows 10 device via an online back-up service.
According to The Verge, Google Photos and Dropbox both support HEIC within their apps, however, Microsoft has been a little slower on the uptake.
That will be a headache for iPhone owners who use OneDrive to get files from their smartphone to their Windows 10 device.
Since HEIC isn’t yet natively supported on Windows 10, the default Photos app will struggle to view any images taken on your iPhone.
Fortunately, it’s possible to convert your HEIC iPhone photo into a format that’s manageable for your Windows 10 computer using a number of online converter tools.
The other option is to disable HEIC on iOS 11 – which forces your Apple device to store all images as JPEG files.
iOS 11 users can disable HEIC by heading to Settings > Camera > Formats.
If you haven’t run across any problems, it’s well worth keeping High Efficiency Image File Format switched on – since it will save you plenty of storage.